R56-FC4002Bluetooth Noise Cancelling Over-Ear Headphones

FIIO
F 4001E
instruction
manual
Interface
and
Function
Description
Play/Pause
Button
Play/Pause
Music
Single
press
to
switch
between
play
and
pause
Voice
Assistant
Press
and
hold
3
seconds
to
activate
the
voice
assistant
Answer
/
Reject
/
End
Call
/
Call
Transfer
Incoming
call
answer:A
short
press
of
the
button
answers
the
call
Incoming
call
rejection:Press
and
hold
for
2
seconds
reject
the
call
Incoming
call
end:Press
and
hold
for
2
seconds
ends
the
ongoing
call
Call
switching:
Double-press
to
switch
between
calls
Pairing
a nd
U npairing
Pairing
After
the
first
power-on,
the
device
automatically
enters
pairing
mode,
and
the
blue
indicator
light
flashes
continuously
After
successful
connection,when
powered
on
again,
the
device
will
enter
auto-reconnection
mode
and
automatically
connect
to
the
previously
paired
device
With
the
device
powered
off,
press
and
hold
the
Power
button
for
5
seconds
without
releasing
it,
until
the
voice
prompt
"Pairing"
is
heard
and
the
blue
LED
flashes
continuously
Unpairing
While
the
device
powered
on,
press
and
hold
the
Volume
+and
Volume
-
buttons
for
5
seconds
until
the
voice
prompt
"pairing"
and
blue
LED
flashed
continuously,this
means
the
pairing
has
been
cleared
successfully
Volume
+
a nd
V olume
-
B uttons
Volume
up:
Short
press
once
to
increase
the
voloime
by
1
level
Next
track:
Press
and
hold
the
Volume
+
button
for
2
seconds
to
skip
to
the
next
track
Volume
down:
Short
press
once
to
decrease
the
volume
by
1
level
Previous
track:

Press
and
hold
the
Volume
‒
button
for
2
seconds
to
skip
to
the
previous
track
LED
I ndicator
S tatus
D escriptions
LED
Indicator
Power
On/Off:
The
white
LED
flashes
three
times.
Bluetooth
Pairing:
The
blue
LED
flashes.
Low
Battery:
The
red
LED
flashes.
Charging:
The
red
LED
remains
solid. Fully
Charged:
The
blue
LED
remains
solid.
3.5mm
Aux
Input:
The
green
LED
illuminates.
Bluetooth
Codec
Indication:
SBC:
Blue
AAC:
Cyan
LDAC:
White








































Multipoint Connection After the connecting F4001E to the first device,disconnect the Bluetooth connection to enter pairing mode.The manually search for "FIIO F4001E" on the second device and connect to it.One successfully connnected, reconnect to the first device via Bluetooth.

TCB CALL página 1 File FCC ID: R56-FC4002 Please upload an exhibit that explains how does the TCB verify the new agent information: 1- Is the address of the agent a valid physical US mailing address (not a US post office box, not a virtual mailbox, not P.O. Boxes, not a vacant lot, not a public building, etc.) ○ We have checked if the address exists in a real and potential building (Google maps) + official US register, after this verification and the evidence below we can guarantee the following: not a US post office box not a virtual mailbox not P.O. Boxes not a vacant lot not a public building(note) ► We checked the FCC FRN Search based on the information provided by the grantee. Google: TCB CALL página 2 EIN Statement TCB CALL página 3 TCB CALL página 4 TCB CALL página 5 ► CONCLUSION by TCB: The ASOP defined and provided by grantee is VALID and confirmed. Therefore the exhibit "C5266091_X23_Ed1_US_Agent_Letter" included in the file is ok. 2- Is the agent physically located at that valid US address such that the agent can be legally served at that address? Yes , check above 3- Has the listed agent clearly agreed in writing to serve as the agent for the grantee at that address? Yes, it is included in the exhibit "C5266091_X23_Ed1_US_Agent_Letter"

1/1 US Agent for Service of Process LETTER OF ATTESTATION TO: Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 US Agent for Service of Process: Company Name: TekFX Logistics LLC FRN: 0033479528 Contact Name: Michael Wang Address: 14383 Newbrook Dr., Suite 300-428, Chantilly, VA 20151 Telephone No: 703-665-9588 Email: [email protected] Applicant: Company name: Guangzhou FiiO Electronic Technology Co., Ltd. FRN: 0022263586 Product Description: Bluetooth Noise Cancelling Over-Ear Headphones Grantee code: R56 FCC ID: R56-FC4002 Contact Name: Kevin Chen Address: No.21 Longliang Road, Xialiang Village, Longgui Street, Baiyun District, Guangzhou city, Guangdong, P.R. China Telephone No: 00862062679040 Email: [email protected] [Guangzhou FiiO Electronic Technology Co., Ltd.] certifies that, as of the date of this filing of the application with the TCB, [TekFX Logistics LLC] is our designated US agent for service of process for the above referenced FCC ID. [Guangzhou FiiO Electronic Technology Co., Ltd.] accepts to maintain an agent for no less than one year after the grantee has terminated all marketing and importation or the conclusion of any commission related proceeding involving equipment. [TekFX Logistics LLC] accepts, as of the date of the filing of the application, the obligation of the designated US agent for service of process for the above reference FCC ID. The US Agent for Service of Process is aware of and agrees to comply with the requirements outlined in the FCC Equipment Authorization Program, Report and Order FCC 22-84, and clause § 2.911. The Applicant is aware of and agrees to comply with the requirements outlined in the FCC Equipment Authorization Program, Report and Order FCC 22-84, and clause § 2.911. Date: 08.03.2026 Applicant’s Name: Kevin Chen US Agent’s Name: Michael Wang Title: QA Manager Title: CEO Signature Signature

Attestation Statement. Old Code: C5266091 24 New Code: 00015544 Ed.3 Change reason: FRN is added to the Applicant information section. 1/1 TO: Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 The Commission adopted rules that prohibit equipment authorization for “covered” telecommunications equipment and video surveillance equipment produced by entities identified on the Commission’s Covered List 1 , which is periodically updated. See the Covered List for more details. This Attestation Statement is to confirm that we follow the Section 2.911(d)(5)(i)-(ii) Applicant Company name: Guangzhou FiiO Electronic Technology Co., Ltd. Grantee code: R56 FCC ID: R56-FC4002 FRN: 0022263586 Contact Name: Kevin Chen Address: No.21 Longliang Road, Xialiang Village, Longgui Street, Baiyun District, Guangzhou city, Guangdong, P.R. China Telephone No: 00862062679040 Fax No: 00862062679042 Email: [email protected] i. [Guangzhou FiiO Electronic Technology Co., Ltd.] (“the applicant”) certifies that the equipment for which authorization is sought is not “covered” equipment prohibited from receiving an equipment authorization pursuant to section 2.903 of the FCC rules. The applicant must sign this certification. ii. [Guangzhou FiiO Electronic Technology Co., Ltd.] (“the applicant”) certifies that, as of the date of the filing of the application, the applicant is not (as a specifically named entity or any of its subsidiaries or affiliates) identified on the Covered List as an entity producing “covered” equipment. The applicant must sign this certification. Guangzhou FiiO Electronic Technology Co., Ltd. certifies that, as of the date of the filing of the application, the applicant is not identified on the Covered List as an entity producing “covered” equipment. Date: 08.03.2026 Applicant’s Name: Kevin Chen Title: QA Manager Signature 1 The Commission’s Covered List is published by the Public Safety and Homeland Security Bureau and posted on the Commission’s website. This Covered List, which is periodically updated, identifies particular equipment, produced by particular entities, that constitutes “covered” equipment. https://www.fcc.gov/supplychain/coveredlist

Guangzhou FiiO Electronic Technology Co., Ltd. Code 00018768 Ed. 2 Item 1. The device is able to install software/program installation? ☐ Yes, go to Item 2. ☒ No. In this case, the rest of the items do not apply. The device cannot support installation of Kaspersky cybersecurity or anti-virus software. Item 2. Technical Requirements for Kaspersky Cybersecurity Software: # General Requirements (For all Devices) Yes / No or N/A Comments 1 Internet connection for activation and updates (For all Operating Systems) N/A Device Bluetooth Noise Cancelling Over-Ear Headphones Company name Guangzhou FiiO Electronic Technology Co., Ltd. Grantee code R56 FCC ID R56-FC4002 FRN 0022263586 Contact name Kevin Chen Address No.21 Longliang Road, Xialiang Village, Longgui Street, Baiyun District, Guangzhou city, Guangdong, P.R. China Telephone number 00862062679040 E-mail [email protected] Chipset/module information BES2710Y Operating System (if applicable) N/A Storage Capacity (hard drive or other permanent memory storage, if applicable) N/A 2 # General Requirements (For Windows Devices) Yes / No or N/A Comments 1 Storage: 1500 MB free space on the hard drive N/A 2 Operating System: Microsoft Windows 8, 8.1, 10 & 11 Home / Pro / Enterprise Microsoft Windows 7 Starter / Home Basic & Premium / Professional / Ultimate SP1 or higher N/A 3 Processor: 1 GHz or higher (x86 or x64) N/A 4 Memory (RAM)1 GB (32-bit) or 2 GB (64-bit) N/A 5 Screen Resolution: Minimum resolution of 1024 x 768 N/A # General Requirements (For macOS devices) Yes / No or N/A Comments 1 Operating System macOS® 13 – 14 N/A 2 Memory (RAM)4 GB N/A 3 Storage: 3455 MB free space on the hard drive N/A # General Requirements (For Android Devices) Yes / No or N/A Comments 1 Storage: 150 MB free space N/A 2 Operating System: Android™ 10 – 14 N/A 3 Screen Resolution: Minimum resolution of 320 x 480 N/A # General Requirements (for iOS devices) Yes / No or N/A Comments 1 Storage: 150 MB free space N/A 2 Operating System: iOS® 17 N/A 3 # General Requirements (For Linux system) Yes / No or N/A Comments 1 Hard drive: 1 GB of free space N/A 2 CPU: Intel Pentium 1 GHz or higher N/A 3 RAM: 1 GB N/A 4 Minimum software requirements: AlmaLinux OS 8 or later; AlterOS 7.5 or later; Astra Linux Common Edition 2.12 or later; CentOS 6.7 or later; Debian GNU/Linux 10.0 or later; EulerOS 2.0 or later; Oracle Linux 7.3 or later ; Red Hat Enterprise Linux 6.7 or later ; Rocky Linux 8.5 or later ; SUSE Linux Enterprise Server 12.5 or later; Ubuntu 12.04 or later ; Uncom OS Home / Business / Education / Enterprise 2.2 or later; ALT Linux Workstaton / Workstation K / Server / Education 8 or later; ROSA Linux Workstation / Server 12 or later ; RED OS 7.3 and later ; N/A After reviewed the technical requirements, is the device capable of supporting the installation of Kaspersky software? ☐ Yes, go to Item 3. ☒ No. In this case, the rest of the items do not apply. The device cannot support installation of Kaspersky software 4 Item 3. Connectivity Capabilities: # Physical Interface Purpose Justification 1 1 # Wireless Interface Purpose Justification 1 1 After the review of this items, the device: ☒ Cannot support installation of any cybersecurity or anti-virus software on the covered list. ☐ Potentially can operate with any cybersecurity or anti-virus software on the covered list – additional third- party proof is provided to demonstrate compliance with requirements as of 2.911(d)5(i),(ii) – “Proof of Compliance with Covered List Software Requirements” of this document applies Signature: Name: Kevin Chen Date: 8/3/2026 1 The justification field is used to justify why the software cannot be received through that interface. Check the annex for more indications.

Guangzhou FiiO Electronic Technology Co., Ltd. Product Similarity Declaration Product name: Bluetooth Noise Cancelling Over-Ear Headphones Model name: F4001E, EH15, F4002E, F4003E, F4004E, F4005E, F4006E, F4007E, F4008E, F4009E, F4010E, F4011E, F4012E, F4013E, F4014E, F4015E, F4016E, F4017E, F4018E, F4019E, F4020E FCC ID: R56-FC4002 We (Guangzhou FiiO Electronic Technology Co., Ltd.) hereby state that all the models are electrical identical including the same software parameter and hardware design (i.e., circuit design, PCB Layout, RF module/circuit, antenna type(s) and antenna location, components on PCB, etc.,), same mechanical structure and design (including product enclosure, materials, etc.,), the only difference is the model name and color. Signature: Name: Kevin Chen Title: QA Manager Date: 8/3/2026

C5266091_X10_Ed.2 1/1 Guangzhou FiiO Electronic Technology Co., Ltd. Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 Date: 8/3/2026 Subject: Request for Confidentiality FCC ID: R56-FC4002 To Whom It May Concern, Pursuant to the provisions of Sections 0.457 and 0.459 of Commission's rules (47CFR0.457, 0.459), we are requesting the Commission to withhold the following attachment(s) as confidential document from public disclosure. Exhibits Long-Term Confidentiality Short-Term Confidentiality NOTE 2 ID Label/Location No No Attestation Statement No No External Photos No ☐ Block Diagram ☒ ☐ Schematics ☒ ☐ Test Report No No Test Setup Photos No ☐ User’s Manual ☐ NOTE 1 ☐ Internal Photos ☐ NOTE 1 ☐ Parts List / Tune Up ☐ ☐ RF Exposure Info No No Operational Description ☒ ☐ Cover Letter(s) No No SDR Software / Security Info ☐ No NOTE 1: Long-Term Confidentiality may be permitted under special conditions (See II. LONG-TERM CONFIDENTIALITY, Section 3 of KDB 726920, use last in force) NOTE 2: Short-Term Confidentiality can be requested for a maximum of 180 days from the date of the grant. Above mentioned document contains detailed system and equipment description are considered as proprietary information in operation of the equipment. The public disclosure of above documents might be harmful to our company and would give competitor an unfair advantage in the market. In case of short-term Confidentiality, the applicant requests the exhibits selected above are withheld from public view for a period of ______ days from the date of the Grant of Equipment Authorization and prior to marketing. It is our understanding that all measurement test reports, FCC ID label format and correspondent during certification review process cannot be granted as confidential documents and those information will be available for public review once the grant of equipment authorization is issued. C5266091_X10_Ed.2 1/1 Sincerely, Signature: Name: Kevin Chen Title: QA Manager

C5266091_X8_Ed.1 1/1 Letter of Authorization Company: Guangzhou FiiO Electronic Technology Co., Ltd. Address: No.21 Longliang Road, Xialiang Village, Longgui Street, Baiyun District, Guangzhou city, Guangdong, P.R. China Product Name: Bluetooth Noise Cancelling Over-Ear Headphones Model Number: F4001E, EH15, F4002E, F4003E, F4004E, F4005E, F4006E, F4007E, F4008E, F4009E, F4010E, F4011E, F4012E, F4013E, F4014E, F4015E, F4016E, F4017E, F4018E, F4019E, F4020E FCC Identifier: R56-FC4002 We authorize LGAI Technological Center S.A., Ronda de la Font del Carme, s/n, 08193 Bellaterra, Spain, to act on our behalf on all matters concerning the above named equipment. Any individual within LGAI Technological Center S.A. is authorized to act on our behalf and take action on the application. We declare that authorize LGAI Technological Center S.A., Ronda de la Font del Carme, s/n, 08193 Bellaterra, Spain, is allowed to forward all information related to the approval project to the Federal Communication Commission and to discuss any issues concerning the approval application. Any and all acts carried out by LGAI Technological Center S.A. on our behalf shall have the same effect as acts of our own. Name: Kevin Chen Date: 8/3/2026 Title: QA Manager Signature of applicant:

Page 1 of 3 Report No.: MTi260617021-0105 Address: 101, No. 7, Zone 2, Xinxing Industrial Park, Fuhai Avenue, Xinhe Community, Fuhai Street, Bao’an District, Shenzhen, Guangdong, China. Tel: 0755-88850135-1439 Mobile: 131-4343-1439 (Wechat same number) Web: http://www.mtitest.cn E-mail: [email protected] Photographs of the EUT (External Photos) Model: F4001E Page 2 of 3 Report No.: MTi260617021-0105 Address: 101, No. 7, Zone 2, Xinxing Industrial Park, Fuhai Avenue, Xinhe Community, Fuhai Street, Bao’an District, Shenzhen, Guangdong, China. Tel: 0755-88850135-1439 Mobile: 131-4343-1439 (Wechat same number) Web: http://www.mtitest.cn E-mail: [email protected] Page 3 of 3 Report No.: MTi260617021-0105 Address: 101, No. 7, Zone 2, Xinxing Industrial Park, Fuhai Avenue, Xinhe Community, Fuhai Street, Bao’an District, Shenzhen, Guangdong, China. Tel: 0755-88850135-1439 Mobile: 131-4343-1439 (Wechat same number) Web: http://www.mtitest.cn E-mail: [email protected]

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Page 1 of 5 Report No.: MTi260617021-0105 Address: 101, No. 7, Zone 2, Xinxing Industrial Park, Fuhai Avenue, Xinhe Community, Fuhai Street, Bao’an District, Shenzhen, Guangdong, China. Tel: 0755-88850135-1439 Mobile: 131-4343-1439 (Wechat same number) Web: http://www.mtitest.cn E-mail: [email protected] Photographs of the EUT (Internal Photos) Model: F4001E Page 2 of 5 Report No.: MTi260617021-0105 Address: 101, No. 7, Zone 2, Xinxing Industrial Park, Fuhai Avenue, Xinhe Community, Fuhai Street, Bao’an District, Shenzhen, Guangdong, China. Tel: 0755-88850135-1439 Mobile: 131-4343-1439 (Wechat same number) Web: http://www.mtitest.cn E-mail: [email protected] Page 3 of 5 Report No.: MTi260617021-0105 Address: 101, No. 7, Zone 2, Xinxing Industrial Park, Fuhai Avenue, Xinhe Community, Fuhai Street, Bao’an District, Shenzhen, Guangdong, China. Tel: 0755-88850135-1439 Mobile: 131-4343-1439 (Wechat same number) Web: http://www.mtitest.cn E-mail: [email protected] Page 4 of 5 Report No.: MTi260617021-0105 Address: 101, No. 7, Zone 2, Xinxing Industrial Park, Fuhai Avenue, Xinhe Community, Fuhai Street, Bao’an District, Shenzhen, Guangdong, China. Tel: 0755-88850135-1439 Mobile: 131-4343-1439 (Wechat same number) Web: http://www.mtitest.cn E-mail: [email protected] ANT Page 5 of 5 Report No.: MTi260617021-0105 Address: 101, No. 7, Zone 2, Xinxing Industrial Park, Fuhai Avenue, Xinhe Community, Fuhai Street, Bao’an District, Shenzhen, Guangdong, China. Tel: 0755-88850135-1439 Mobile: 131-4343-1439 (Wechat same number) Web: http://www.mtitest.cn E-mail: [email protected]

Tel:0755-88850135-1439 Mobile: 131-4343-1439（Wechat same number） Web: http://www.mtitest.cn E-mail: [email protected] Address: 101, No. 7, Zone 2, Xinxing Industrial Park, Fuhai Avenue, Xinhe Community, Fuhai Street, Bao’an District, Shenzhen, Guangdong,China Q/MTI-QP-12-FE038 Ver./Rev.：A1 Page 1 of 6 RF EXPOSURE Test Report Report No. : MTi260617021-0105E3 Date of issue : 2026-07-24 Applicant : Guangzhou FiiO Electronic Technology Co., Ltd. Product : Bluetooth Noise Cancelling Over-Ear Headphones Model(s) : F4001E, EH15, F4002E, F4003E, F4004E, F4005E, F4006E, F4007E, F4008E, F4009E, F4010E, F4011E, F4012E, F4013E, F4014E, F4015E, F4016E, F4017E, F4018E, F4019E, F4020E FCC ID : R56-FC4002 Shenzhen Microtest Co., Ltd. TEST REPORT Report No.: MTi260617021-0105E3 Tel:0755-88850135-1439 Mobile: 131-4343-1439（Wechat same number） Web:http://www.mtitest.cn E-mail: [email protected] Address: 101, No. 7, Zone 2, Xinxing Industrial Park, Fuhai Avenue, Xinhe Community, Fuhai Street, Bao’an District, Shenzhen, Guangdong,China Q/MTI-QP-12-FE012 Ver./Rev.：A1 Page 2 of 6 Table of contents 1 Standalone SAR test exclusion considerations ............................................................... 4 2 SAR Test Exclucsion Thresholds ....................................................................................... 5 TEST REPORT Report No.: MTi260617021-0105E3 Tel:0755-88850135-1439 Mobile: 131-4343-1439（Wechat same number） Web:http://www.mtitest.cn E-mail: [email protected] Address: 101, No. 7, Zone 2, Xinxing Industrial Park, Fuhai Avenue, Xinhe Community, Fuhai Street, Bao’an District, Shenzhen, Guangdong,China Q/MTI-QP-12-FE012 Ver./Rev.：A1 Page 3 of 6 Test Result Certification Applicant Guangzhou FiiO Electronic Technology Co., Ltd. Applicant Address No.21, Longliang Road, Xialiang Village, Longgui Street, Baiyun District, Guangzhou, CHINA. Manufacturer Guangzhou FiiO Electronic Technology Co., Ltd. Manufacturer Address No.21, Longliang Road, Xialiang Village, Longgui Street, Baiyun District, Guangzhou, CHINA. Factory Guangzhou FiiO Electronic Technology Co., Ltd. Factory Address No.21, Longliang Road, Xialiang Village, Longgui Street, Baiyun District, Guangzhou, CHINA. Product description Product name Bluetooth Noise Cancelling Over-Ear Headphones Trademark FIIO Model name F4001E Series Model(s) EH15, F4002E, F4003E, F4004E, F4005E, F4006E, F4007E, F4008E, F4009E, F4010E, F4011E, F4012E, F4013E, F4014E, F4015E, F4016E, F4017E, F4018E, F4019E, F4020E Standards 47 CFR Part 2.1093 Test method KDB 447498 D01 v06 Testing Information Date of test 2026-06-18 to 2026-07-21 Test Result Pass Prepared by: Yanice Xie Reviewed by: David Lee Approved by: Lewis Lian TEST REPORT Report No.: MTi260617021-0105E3 Tel:0755-88850135-1439 Mobile: 131-4343-1439（Wechat same number） Web:http://www.mtitest.cn E-mail: [email protected] Address: 101, No. 7, Zone 2, Xinxing Industrial Park, Fuhai Avenue, Xinhe Community, Fuhai Street, Bao’an District, Shenzhen, Guangdong,China Q/MTI-QP-12-FE012 Ver./Rev.：A1 Page 4 of 6 1 Standalone SAR test exclusion considerations Unless specifically required by the published RF exposure KDB procedures, standalone 1-g head or body and 10-g extremity SAR evaluation for general population exposure conditions, by measurement or numerical simulation, is not required when the corresponding SAR Test Exclusion Threshold condition(s), listed below, is (are) satisfied. These test exclusion conditions are based on source-based time-averaged maximum conducted output power of the RF channel requiring evaluation, adjusted for tune-up tolerance, and the minimum test separation distance required for the exposure conditions. The minimum test separation distance defined in 4.1 f) is determined by the smallest distance from the antenna and radiating structures or outer surface of the device, according to the host form factor, exposure conditions and platform requirements, to any part of the body or extremity of a user or bystander. To qualify for SAR test exclusion, the test separation distances applied must be fully explained and justified, typically in the SAR measurement or SAR analysis report, by the operating configurations and exposure conditions of the transmitter and applicable host platform requirements, according to the required published RF exposure KDB procedures. When no other RF exposure testing or reporting are required, a statement of justification and compliance must be included in the equipment approval, in lieu of the SAR report, to qualify for SAR test exclusion. When required, the device specific conditions described in the other published RF exposure KDB procedures must be satisfied before applying these SAR test exclusion provisions. a) For 100 MHz to 6 GHz and test separation distances ≤ 50 mm, the 1-g and 10-g SAR test exclusion thresholds are determined by the following: [(max. power of channel, including tune-up tolerance, mW) / (min. test separation distance, mm)] · [√f(GHz)] ≤ 3.0 for 1-g SAR, and ≤ 7.5 for 10-g extremity SAR, where ⚫ f (GHz) is the RF channel transmit frequency in GHz ⚫ Power and distance are rounded to the nearest mW and mm before calculation ⚫ The result is rounded to one decimal place for comparison ⚫ The values 3.0 and 7.5 are referred to as numeric thresholds in step b) below The test exclusions are applicable only when the minimum test separation distance is ≤ 50 mm, and for transmission frequencies between 100 MHz and 6 GHz. When the minimum test separation distance is < 5 mm, a distance of 5 mm according to 4.1 f) is applied to determine SAR test exclusion. b) For 100 MHz to 6 GHz and test separation distances > 50 mm, the 1-g and 10-g SAR test exclusion thresholds are determined by the following (also illustrated in Appendix B): 1) {[Power allowed at numeric threshold for 50 mm in step a)] + [(test separation distance – 50 mm)·(f(MHz)/150)]} mW, for 100 MHz to 1500 MHz 2) {[Power allowed at numeric threshold for 50 mm in step a)] + [(test separation distance – 50 m…

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Tel:0755-88850135-1439 Mobile: 131-4343-1439（Wechat same number） Web: http://www.mtitest.cn E-mail: [email protected] Address: 101, No. 7, Zone 2, Xinxing Industrial Park, Fuhai Avenue, Xinhe Community, Fuhai Street, Bao’an District, Shenzhen, Guangdong,China Q/MTI-QP-12-FE038 Ver./Rev.：A1 Page 1 of 60 Test Report Report No. : MTi260617021-0105E2 Date of issue : 2026-07-24 Applicant : Guangzhou FiiO Electronic Technology Co., Ltd. Product : Bluetooth Noise Cancelling Over-Ear Headphones Model(s) : F4001E, EH15, F4002E, F4003E, F4004E, F4005E, F4006E, F4007E, F4008E, F4009E, F4010E, F4011E, F4012E, F4013E, F4014E, F4015E, F4016E, F4017E, F4018E, F4019E, F4020E FCC ID : R56-FC4002 Shenzhen Microtest Co., Ltd. TEST REPORT Report No.: MTi260617021-0105E2 Tel: 0755-88850135-1439 Mobile: 131-4343-1439 (Wechat same number) Web: http://www.mtitest.cn E-mail: [email protected] Address: 101, No. 7, Zone 2, Xinxing Industrial Park, Fuhai Avenue, Xinhe Community, Fuhai Street, Bao’an District, Shenzhen, Guangdong,China Q/MTI-QP-12-FE038 Ver./Rev.：A1 Page 2 of 60 Table of contents 1 General Description .................................................................................................................... 4 1.1 Description of the EUT ....................................................................................................... 4 1.2 Description of test modes .................................................................................................. 4 1.3 Environmental Conditions .................................................................................................. 6 1.4 Description of support units ............................................................................................... 6 1.5 Measurement uncertainty .................................................................................................. 6 2 Summary of Test Result ............................................................................................................. 7 3 Test Facilities and accreditations .............................................................................................. 8 3.1 Test laboratory ................................................................................................................... 8 4 List of test equipment ................................................................................................................ 9 5 Evaluation Results (Evaluation) .............................................................................................. 11 5.1 Antenna requirement ....................................................................................................... 11 6 Radio Spectrum Matter Test Results (RF) .............................................................................. 12 6.1 6dB Bandwidth................................................................................................................. 12 6.2 Maximum Conducted Output Power ................................................................................ 14 6.3 Power Spectral Density ................................................................................................... 15 6.4 RF conducted spurious emissions and band edge measurement ................................... 16 6.5 Band edge emissions (Radiated) ..................................................................................... 17 6.6 Radiated emissions (below 1GHz) ................................................................................... 20 6.7 Radiated emissions (above 1GHz) .................................................................................. 24 Photographs of the test setup ........................................................................................................ 29 Photographs of the EUT.................................................................................................................. 30 Appendix A: DTS Bandwidth .......................................................................................................... 32 Appendix B: Maximum conducted output power ......................................................................... 36 Appendix C: Maximum power spectral density ............................................................................ 40 Appendix D: Band edge measurements ........................................................................................ 44 Appendix E: Conducted Spurious Emission ................................................................................. 46 Appendix F: Duty Cycle .................................................................................................................. 56 TEST REPORT Report No.: MTi260617021-0105E2 Tel: 0755-88850135-1439 Mobile: 131-4343-1439 (Wechat same number) Web: http://www.mtitest.cn E-mail: [email protected] Address: 101, No. 7, Zone 2, Xinxing Industrial Park, Fuhai Avenue, Xinhe Community, Fuhai Street, Bao’an District, Shenzhen, Guangdong,China Q/MTI-QP-12-FE038 Ver./Rev.：A1 Page 3 of 60 Test Result Certification Applicant Guangzhou FiiO Electronic Technology Co., Ltd. Applicant Address No.21, Longliang Road, Xialiang Village, Longgui Street, Baiyun District, Guangzhou, CHINA. Manufacturer Guangzhou FiiO Electronic Technology Co., Ltd. Manufacturer Address No.21, Longliang Road, Xialiang Village, Longgui Street, Baiyun District, Guangzhou, CHINA. Factory Guangzhou FiiO Electronic Technology Co., Ltd. Factory Address No.21, Longliang Road, Xialiang Village, Longgui Street, Baiyun District, Guangzhou, CHINA. Product description Product name Bluetooth Noise Cancelling Over-Ear Headphones Tradem…

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