2BFZX-SKU01Bluetooth speaker

Bluetooth speaker User Manual Model:SKU#1 Ratings: AC 120V/60HZ/ 0.3A 20W Turn on the power. When the machine is powered on normally, the machine will sound the power on tone. When the prompt tone is finished, you can receive the Bluetooth name of the speaker through the Bluetooth device and can directly pair the connection. When the connected device is successfully connected to the speaker, the speaker will prompt: The Bluetooth connection is successful. At this time, the device and the speaker are connected, and the music on the device can be played according to your personal preferences FCC WARNING This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. Any changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: -- Reorient or relocate the receiving antenna. -- Increase the separation between the equipment and receiver. -- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. -- Consult the dealer or an experienced radio/TV technician for help. To maintain compliance with FCC’s RF Exposure guidelines, This equipment should be installed and operated with minimum distance between 20cm the radiator your body: Use only the supplied antenna.

Yu Yuan Limited U.S. Agent Designation for Service of Process (Applicant and U.S. Agent are Separate Parties) TO: Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046, USA ATTENTION: FCC Certification – Section 2.911(d)(7) Information Designated U.S. Agent Company Name: StarBreeze corporation FRN: 0035311893 Contact Name: Jim Broughman Address: 603 S. Church Street Suite 201 Mooresville, NC 28115 USA Telephone No: +1-7049654095 Email: [email protected] This letter is to confirm that we (“the Designated U.S. Agent) have accepted the responsibility to act as the Designated U.S. Agent for Service of Process as required by section 47 CFR 2.911(d)(7) on behalf of the Applicant noted below. U.S. Agent Signature: Date: 2024.4.22 Signed by (Printed Name/Title): Jim Broughman/Manager The Applicant acknowledges that they must maintain an agent for no less than one year after terminating all marketing and importation OR the conclusion of any Commission-related proceeding involving the equipment. The applicant further acknowledges their responsibility to inform the FCC whenever the Designated U.S. Agent information above changes. Applicant Company name: Yu Yuan Limited Grantee Code: 2BFZX FCC ID: 2BFZX-SKU01 FRN: 0035312735 Contact Name: Simon Lo Address: NO.1, XINYUAN ROAD, CHENJIANG STREET, ZHONGKAI HIGH-TECH ZONE, HUIZHOU CITY, GUANGDONG PROVINCE, P.R. CHINA Telephone No:15766568818 Email: [email protected] Applicant Signature: Date: 2024.04.22 Signed by (Printed Name/Title): Simon Lo / Manager

Yu Yuan Limited 2024.04.25 Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: Attestation Statements Part 2.911(d)(5)(i) request for FCC ID: 2BFZX-SKU01 [Yu Yuan Limited] (“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. Sincerely, (Applicant signature) (Applicant printed name) Simon Lo Yu Yuan Limited 2024.04.25 Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: Attestation Statements Part 2.911(d)(5)(ii) request for FCC ID: 2BFZX-SKU01 [Yu Yuan Limited] (“the applicant”) 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. Sincerely, (Applicant signature) (Applicant printed name) Simon Lo

Yu Yuan Limited 2024.04.25 Eurofins Electrical and Electronic Testing NA, Inc. 914 W. Patapsco Avenue Baltimore, MD 21230 USA RE: CONFIDENTIALITY REQUEST FOR EUT NAME: Bluetooth speaker Trademark: N/A MODEL : SKU#1 FCC ID : 2BFZX-SKU01 To Whom It May Concern: This letter serves as an official request for confidentiality under sections 0.457 and 0.459 of CFR 47. We have requested that the - Block Diagram - Schematics - Operational Description required to be submitted with this application be permanently withheld from public review. The above materials contain trade secrets and proprietary information not customarily released to the public. The public disclosure of these materials may be harmful to the applicant and provide unjustified benefits to its competitors. Please contact me if there is any information you may need. Sincerely, Client’s signature: Client’s name / title : Simon Lo /Manager Contact information / address: NO.1, XINYUAN ROAD, CHENJIANG STREET, ZHONGKAI HIGH-TECH ZONE, HUIZHOU CITY, GUANGDONG PROVINCE, P.R. CHINA

Yu Yuan Limited 2024.04.25 Eurofins Electrical and Electronic Testing NA, Inc. 914 W. Patapsco Avenue Baltimore, MD 21230 USA RE: LETTER OF AGENT AUTHORIZATION To Whom It May Concern: We, the undersigned, hereby authorize Shenzhen BCTC Testing Co., Ltd to act on our behalf in all matters relating to application for equipment authorization, including the signing of all documents relating to these matters. We also hereby certify that no party to the application authorized hereunder is subject to the denial of benefits, including FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C.853(a). This agreement expires one year from the current date. Sincerely, Client’s signature: Client’s name / title : Simon Lo /Manager Contact information / address: NO.1, XINYUAN ROAD, CHENJIANG STREET, ZHONGKAI HIGH-TECH ZONE, HUIZHOU CITY, GUANGDONG PROVINCE, P.R. CHINA

External Photos

Size:20*10mm FCC ID: 2BFZX-SKU01 This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. Label location

Internal Photos Antenna

FCC §15.247 (i), §2.1091 – RF Exposure FCC ID:2BFZX-AR44 Applied procedures / limit According to FCC §15.247(i) and §1.1307(b)(1), systems operating under the provisions of this section shall be operated in a manner that ensures that the public is not exposed to radio frequency energy level in excess of the Commission’s guidelines. Limits for Occupational / Controlled Exposure Frequency Range (MHz) Electric Field Strength (E) (V/m) Magnetic Field Strength (H) (A/m) Power Density (S) (mW/ cm 2 ) Averaging Time |E| 2 ,|H| 2 or S (minutes) 0.3-3.0 614 1.63 (100)* 6 3.0-30 1842 / f 4.89 / f (900 / f)* 6 30-300 61.4 0.163 1.0 6 300-1500 F/300 6 1500-100,000 5 6 Note: ƒ is frequency in MHz * = Power density limit is applicable at frequencies greater than 100 MHz Limits for General Population / Uncontrolled Exposure Frequency Range (MHz) Electric Field Strength (E) (V/m) Magnetic Field Strength (H) (A/m) Power Density (S) (mW/ cm 2 ) Averaging Time |E| 2 ,|H| 2 or S (minutes) 0.3-1.34 614 1.63 (100)* 30 1.34-30 824/f 2.19/f (180/f)* 30 30-300 27.5 0.073 0.2 30 300-1500 F/1500 30 1500-100,000 1.0 30 Note: f = frequency in MHz * = Plane-wave equivalent power density MPE PREDICTION Predication of MPE limit at a given distance, Equation from OET Bulletin 65, Edition 97-01 Where: S = power density P = power input to antenna G = power gain of the antenna in the direction of interest relative to an isotropic radiator R = distance to the center of radiation of the antenna, R=0.2m TEST RESULTS Tune up Produce power Maximum peak output power (dBm) Output power to antenna (mW) Antenna Gain (numeric) Power Density (S) (mW/ cm2) Limit (mW/ cm2) Result BT 3±1 4 2.51 2.178 (3.38dBi) 0.01088 1 Pass

Inverted F Antenna Specification Summary ITEM ANT SPEC Model Name 2.4GANT Center Frequency Horizontal Vertical 2400Mhz 2450Mhz 2500Mhz 2400Mhz 2450Mhz 2500Mhz -0.98 -1.05 -1.34 2.81 1.26 0.33 MAX. Gain 3.38dbi Polarization 偏振 horizontal and vertical Azimuth Beam Pattern 方位波束方向图 Omni-directional Impedance 阻抗 50Ω Manufacture Shanghai Mountain View Silicon Technology Co., Ltd. Manufacture address SHENZHEN MORLAB COMMUNICATIONS TECHNOLOGY Co., Ltd. FL1-3, Building A, FeiYang Science Park, No.8 LongChang Road, l k ii hh i hi Antenna Photo & Length (mm) Gain Frequency Gain(dBi) 2400MHz 2.81 2410MHz 2.74 2420MHz 3.38 2430MHz 2.73 2440MHz 1.01 2450MHz 1.26 2460MHz 1.50 2470MHz 1.49 2480MHz 1.42 2490MHz 0.36 2500MHz 0.33 Return Loss/VSWR/Input Impedance Frequency Return Loss (dB) VSWR Input 2400MHz -7.23 2.53 50 2440MHz -6.47 2.80 50 2450MHz -6.22 2.90 50 2480MHz -5.18 3.44 50 2500MHz -4.56 3.89 50 2D Radiation Pattern Phi=0° Phi=90° Theta=90° 3D Radiation Pattern 2402Mhz 2450Mhz 2500Mhz Return Loss VSWR

No.：BCTC/RF-EMC-005 Page: 1 of 79 Edition：B.2 TEST REPORT Shenzhen BCTC Testing Co., Ltd. Report No.: BCTC2404636784E Applicant: Yu Yuan Limited Product Name: Bluetooth speaker Test Model: SKU#1 Tested Date: 2024-04-09 to 2024-04-22 Issued Date: 2024-04-22 Report No.:BCTC2404636784E No.：BCTC/RF-EMC-005 Page: 2 of 79 Edition：B.2 FCC ID:2BFZX-SKU01 The test report is effective only with both signature and specialized stamp. This result(s) shown in this report refer only to the sample(s) tested. Without written approval of Shenzhen BCTC Testing Co., Ltd, this report can’t be reproduced except in full. The tested sample(s) and the sample information are provided by the client. Product Name: Bluetooth speaker Trademark: N/A Model/Type Reference: SKU#1 Prepared For: Yu Yuan Limited Address: NO.1, XINYUAN ROAD, CHENJIANG STREET, ZHONGKAI HIGH-TECH ZONE, HUIZHOU CITY, GUANGDONG PROVINCE, P.R. CHINA Manufacturer: Yu Yuan Limited Address: NO.1, XINYUAN ROAD, CHENJIANG STREET, ZHONGKAI HIGH-TECH ZONE, HUIZHOU CITY, GUANGDONG PROVINCE, P.R. CHINA Prepared By: Shenzhen BCTC Testing Co., Ltd. Address: 1-2/F., Building B, Pengzhou Industrial Park, No.158, Fuyuan 1st Road, Zhancheng, Fuhai Subdistrict, Bao'an District, Shenzhen, Guangdong, China Sample Received Date: 2024-04-09 Sample tested Date: 2024-04-09 to 2024-04-22 Issue Date: 2024-04-22 Report No.: BCTC2404636784E Test Standards FCC Part15.247 ANSI C63.10-2013 Test Results PASS Remark: This is Bluetooth Classic radio test report. Tested by: Approved by: Tang Changyu/ Project Handler Zero Zhou/Reviewer Report No.:BCTC2404636784E No.：BCTC/RF-EMC-005 Page: 3 of 79 Edition：B.2 Table Of Content Test Report Declaration Page 1. Version .................................................................................................................. 5 2. Test Summary ....................................................................................................... 6 3. Measurement Uncertainty ..................................................................................... 7 4. Product Information And Test Setup ..................................................................... 8 4.1 Product Information ............................................................................................... 8 4.2 Test Setup Configuration ...................................................................................... 8 4.3 Support Equipment ............................................................................................... 9 4.4 Channel List .......................................................................................................... 9 4.5 Test Mode ........................................................................................................... 10 4.6 Table Of Parameters Of Text Software Setting ................................................... 10 5. Test Facility And Test Instrument Used ............................................................... 11 5.1 Test Facility ......................................................................................................... 11 5.2 Test Instrument Used .......................................................................................... 11 6. Conducted Emissions .......................................................................................... 13 6.1 Block Diagram Of Test Setup .............................................................................. 13 6.2 Limit .................................................................................................................... 13 6.3 Test procedure .................................................................................................... 13 6.4 EUT operating Conditions ................................................................................... 13 6.5 Test Result .......................................................................................................... 14 7. Radiated emissions ............................................................................................. 16 7.1 Block Diagram Of Test Setup .............................................................................. 16 7.2 Limit .................................................................................................................... 17 7.3 Test procedure .................................................................................................... 18 7.4 EUT operating Conditions ................................................................................... 19 7.5 Test Result .......................................................................................................... 19 8. Radiated Band Emission Measurement And Restricted Bands Of Operation ..... 23 8.1 Block Diagram Of Test Setup .............................................................................. 23 8.2 Limit .................................................................................................................... 23 8.3 Test procedure .................................................................................................... 24 8.4 EUT operating Conditions ................................................................................... 24 8.5 Test Result .......................................................................................................... 25 9. Spurious RF Conducted Emissions ..................................................................... 26 9.1 Block Diagram Of Test Setup .............................................................................. 26 9.2 Limit .................................................................................................................... 26 9.3 Test procedure .................................................................................................... 26 9.4 Test Result .......................................................................................................... 27 10. 20 dB Bandwidth .…

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Report No.:BCTC2404636784E No.：BCTC/RF-EMC-005 Page: 56 of 79 Edition：B.2 Power NVNT 1-DH1 2480MHz Power NVNT 2-DH1 2402MHz Report No.:BCTC2404636784E No.：BCTC/RF-EMC-005 Page: 57 of 79 Edition：B.2 Power NVNT 2-DH1 2441MHz Power NVNT 2-DH1 2480MHz Report No.:BCTC2404636784E No.：BCTC/RF-EMC-005 Page: 58 of 79 Edition：B.2 Power NVNT 3-DH1 2402MHz Power NVNT 3-DH1 2441MHz Report No.:BCTC2404636784E No.：BCTC/RF-EMC-005 Page: 59 of 79 Edition：B.2 Power NVNT 3-DH1 2480MHz Report No.:BCTC2404636784E No.：BCTC/RF-EMC-005 Page: 60 of 79 Edition：B.2 12. Hopping Channel Separation 12.1 Block Diagram Of Test Setup 12.2 Limit Frequency hopping systems shall have hopping channel carrier frequencies separated by a minimum of 25 kHz or the 20 dB bandwidth of the hopping channel, whichever is greater. Alternatively, frequency hopping systems operating in the 2400-2483.5 MHz band may have hopping channel carrier frequencies that are separated by 25 kHz or two-thirds of the 20 dB bandwidth of the hopping channel, whichever is greater, provided the systems operate with an output power no greater than 0.125W. 12.3 Test procedure 1. Remove the antenna from the EUT and then connect a low RF cable from the antenna port to the spectrum. 2. Set the spectrum analyzer: RBW = 30kHz. VBW = 100kHz , Span = 2.0MHz. Sweep = auto; Detector Function = Peak. Trace = Max hold. 3. Allow the trace to stabilize. Use the marker-delta function to determine the separation between the peaks of the adjacent channels. The limit is specified in one of the subparagraphs of this Section Submit this plot. 12.4 Test Result Condition Mode Hopping Freq1 (MHz) Hopping Freq2 (MHz) HFS (MHz) Limit (MHz) Verdict NVNT 1-DH1 2401.948 2402.944 0.996 0.644 Pass NVNT 1-DH1 2440.972 2441.97 0.998 0.617 Pass NVNT 1-DH1 2478.95 2479.994 1.044 0.625 Pass NVNT 2-DH1 2401.994 2402.992 0.998 0.885 Pass NVNT 2-DH1 2440.992 2441.99 0.998 0.848 Pass NVNT 2-DH1 2478.986 2479.986 1 0.841 Pass NVNT 3-DH1 2401.994 2402.994 1 0.876 Pass NVNT 3-DH1 2440.99 2441.99 1 0.865 Pass NVNT 3-DH1 2478.988 2479.986 0.998 0.845 Pass Report No.:BCTC2404636784E No.：BCTC/RF-EMC-005 Page: 61 of 79 Edition：B.2 Test Graphs CFS NVNT 1-DH1 2402MHz CFS NVNT 1-DH1 2441MHz Report No.:BCTC2404636784E No.：BCTC/RF-EMC-005 Page: 62 of 79 Edition：B.2 CFS NVNT 1-DH1 2480MHz CFS NVNT 2-DH1 2402MHz Report No.:BCTC2404636784E No.：BCTC/RF-EMC-005 Page: 63 of 79 Edition：B.2 CFS NVNT 2-DH1 2441MHz CFS NVNT 2-DH1 2480MHz Report No.:BCTC2404636784E No.：BCTC/RF-EMC-005 Page: 64 of 79 Edition：B.2 CFS NVNT 3-DH1 2402MHz CFS NVNT 3-DH1 2441MHz Report No.:BCTC2404636784E No.：BCTC/RF-EMC-005 Page: 65 of 79 Edition：B.2 CFS NVNT 3-DH1 2480MHz Report No.:BCTC2404636784E No.：BCTC/RF-EMC-005 Page: 66 of 79 Edition：B.2 13. Number Of Hopping Frequency 13.1 Block Diagram Of Test Setup 13.2 Limit Frequency hopping systems in the 2400-2483.5 MHz band shall use at least 15 channels. 13.3 Test procedure 1. Remove the antenna from the EUT and then connect a low RF cable from the antenna port to the spectrum. 2. Set the spectrum analyzer: RBW = 100kHz. VBW = 300kHz. Sweep = auto; Detector Function = Peak. Trace = Max hold. 3. Allow the trace to stabilize. It may prove necessary to break the span up to sections. in order to clearly show all of the hopping frequencies. The limit is specified in one of the subparagraphs of this Section. 4. Set the spectrum analyzer: Start Frequency = 2.4GHz, Stop Frequency = 2.4835GHz. Sweep=auto; 13.4 Test Result Condition Mode Hopping Number Limit Verdict NVNT 1-DH1 79 15 Pass NVNT 2-DH1 79 15 Pass NVNT 3-DH1 79 15 Pass Report No.:BCTC2404636784E No.：BCTC/RF-EMC-005 Page: 67 of 79 Edition：B.2 Test Graphs Hopping No. NVNT 1-DH1 2441MHz Hopping No. NVNT 2-DH1 2441MHz Report No.:BCTC2404636784E No.：BCTC/RF-EMC-005 Page: 68 of 79 Edition：B.2 Hopping No. NVNT 3-DH1 2441MHz Report No.:BCTC2404636784E No.：BCTC/RF-EMC-005 Page: 69 of 79 Edition：B.2 14. Dwell Time 14.1 Block Diagram Of Test Setup 14.2 Limit Frequency hopping systems in the 2400-2483.5 MHz band shall use at least 15 channels. The average time of occupancy on any channel shall not be greater than 0.4 seconds within a period of 0.4 seconds multiplied by the number of hopping channels employed. Frequency hopping systems may avoid or suppress transmissions on a particular hopping frequency provided that a minimum of 15 channels are used. 14.3 Test procedure 1. Remove the antenna from the EUT and then connect a low RF cable from the antenna port to the spectrum. 2. Set spectrum analyzer span = 0. Centred on a hopping channel; 3. Set RBW = 1MHz and VBW = 3MHz.Sweep = as necessary to capture the entire dwell time per hopping channel. Set the EUT for DH5, DH3 and DH1 packet transmitting. 4. Use the marker-delta function to determine the dwell time. If this value varies with different modes of operation (e.g.. data rate. modulation format. etc.). repeat this test for each variation. The limit is specified in one of the subparagraphs of this Section. Submit this plot(s). 14.4 Test Result DH5 Packet permit maximum 1600 / 79 / 6 hops per second in each channel (5 time slots RX, 1 time slot TX). DH3 Packet permit maximum 1600 / 79 / 4 hops per second in each channel (3 time slots RX, 1 time slot TX). DH1 Packet permit maximum 1600 / 79 /2 hops per second in each channel (1 time slot RX, 1 time slot TX). So, the Dwell Time can be calculated as follows: DH5:1600/79/6*0.4*79*(MkrDelta)/1000 DH3:1600/79/4*0.4*79*(MkrDelta)/1000 DH1:1600/79/2*0.4*79*(MkrDelta)/1000 Remark: Mkr Delta is once pulse time. Report No.:BCTC2404636784E No.：BCTC/RF-EMC-005 Page: 70 of 79 Edition：B.2 Condition Mode Frequency (MHz) Pulse Time (ms) Total Dwell Time (ms) Burst Count Period Time (ms) Limit (ms) Verdict NVNT 1-DH1 2441 0.38 120.08 316 31600 400 Pass NVNT 1-DH3 2441 1.644 263.04 160 31600 400 Pass NVNT 1-DH5 2441 2.892 286.308 99 31600 400 Pass NVNT 2-DH1 2441 0.387 122.292 316 31600 400 Pass NVNT 2-DH3 2441 1.638 262.08 160 31600 400 Pass NVNT 2-DH5 2441 2.886 2…

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17. EUT Test Setup Photographs Conducted Measurement Photo Radiated Measurement Photos