2AOKB-D2090soundcore SpaceFlow

Anker Innovations Limited Add: Unit 56, 8th Floor, Tower 2, Admiralty Centre, 18 Harcourt Road, Hong Kong Tel: +86-75586544807 Email: [email protected] Attestation Letter Date:2026-03-25 FEDERAL COMMUNICATIONS COMMI SSION Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Dear Sir or Madam: Our product soundcore SpaceFlow , mo del: D2090, FCC ID:2AOKB-D2090, for marketing purpose, this product only supports BT (GFSK, π/4-DQPSK, 8 DPSK), BLE 1M & 2M, 2.4G Wi-Fi (2412-2462MHz, 802.11b/g/n20/ax20 modes ; 2422-2452MHz ,802.11n40/ax40 modes), 5.2G Wi-Fi (5150~5250MHz, 802.11a/n20/n40/ac20/ac40/ac80/ax20/ax40/ax80 modes),5.3G Wi-Fi (5250~5350MHz , 802.11a/n20/n40/ ac20/ac40/ac80/ax20/ax40/ax80 modes) , 5.6G Wi- Fi (5470~5725MHz , 802.11a/n20/n40/ac20/ac40/ac80/ ax20/ax40/ax80 modes) , 5.8G W i -Fi (5725~5850MHz , 802.11a/n20/n40/ac20/ac40/ ac80/ax20/ax40/ax80 modes), 802.11ax mode only supports full RU and doesn't support partial RU. The other functions, bands and modes was disabled to use by manufacturer in the software, the end user has no capability to activate it. Sincerely, Printed Name: Justin Zhou Title: Testing and Compliance Director

Anker Innovations Limited Add: Unit 56, 8th Floor, Tower 2, Admiralty Centre, 18 Harcourt Road, Hong Kong Tel: +86-75586544807 Email: [email protected] CFR 47 §2.911(d)(5)(i)(ii) Attestation Letter Attestation Letter Date: 2026-03-25 FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Ref: Attestation Statements CFR 47 §2.911(d)(5)(i)(ii) Filing FCC ID:2AOKB-D2090 Anker Innovations 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. Anker Innovations 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. Anker Innovations Limited certifies that the equipment does not use Kaspersky's software information. Sincerely, Signature Contact Person: Justin Zhou Title: Testing and Compliance Director

2.911(d)(7)USAAgentv1.2 Section2.911(d)(7)USAAgentforServiceofProcess Companyname:AnkerInnovationsLimited Address:Unit56,8thFloor,Tower2,AdmiraltyCentre,18HarcourtRoad,HongKong FRN:0027073105 2.911(d)(7)USADesignatedAgentforServiceofProcess We,[[AnkerInnovationsLimited](“theapplicant”)designate[[FantasiaTradingLLC] NOTE1 forthepurposeofacceptingserviceofprocessonbehalfoftheapplicant. Applicantconsent:WeAcknowledgeourconsenttoacceptserviceofprocessinthe UnitedStatesformattersrelatedtotheapplicableequipment,andatthephysicalU.S. addressandemailaddressofthedesignatedagentandacknowledgeour acceptanceofourobligationtomaintainanagentforserviceofprocessintheUnited Statesfornolessthanoneyearaftereitherthegranteehaspermanentlyterminated allmarketingandimportationoftheapplicableequipmentwithintheU.S.,orthe conclusionofanyCommission-relatedadministrativeorjudicialproceedinginvolving theequipment,whicheverislater. Agentobligation:WeAcknowledgeourobligationtoacceptserviceofprocessinthe UnitedStatesformattersrelatedtotheapplicableequipmentatourphysicalU.S. addressandemailaddressfornolessthanoneyearaftereitherthegranteehas permanentlyterminatedallmarketingandimportationoftheapplicableequipment withintheU.S.,ortheconclusionofanyCommission-relatedadministrativeorjudicial proceedinginvolvingtheequipment,whicheverislater. USAAgent Companyname:FantasiaTradingLLC Address:5350OntarioMillsPkwy,STE100, Ontario,CA91764,UnitedStates FRN:0033423005 ContactName:ConnorZhai TelephoneNo:(800)988-7973 Email:[email protected] Applicant Companyname:AnkerInnovations Limited Address:Unit56,8thFloor,Tower2, AdmiraltyCentre,18HarcourtRoad, HongKong FRN:0027073105 ContactName:JustinZhou TelephoneNo:+86-755-86544807 Email:[email protected] Signature: Title:GeneralManager Signature: Title:ComplianceManager Date:2026/01/27Date:2026/01/27 2.911(d)(7)USAAgentv1.2 NOTE1:AnapplicantlocatedintheUnitedStatesmaydesignateitselfastheagentforservice ofprocess. Reference;FederalRegisterdocument2022-28263publishedon02/06/23 https://www.federalregister.gov/documents/2023/02/06/2022-28263/protecting-against-nation al-security-threats-to-the-communications-supply-chain-through-the

QA-FR-170-B Anker Innovations Limited Add: Unit 56, 8th Floor, Tower 2, Admiralty Centre, 18 Harcourt Road, Hong Kong Tel: +86-75586544807 Email: [email protected] FCC Authorization Date: 2026-03-25 FEDERAL COMMUNICATIONS COMMISSION Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Subject: Agent Authorization To whom it may concern: We , Anker Innovations Limited, Hereby authorizes Shenzhen Accurate Technology Co., Ltd. to act on its behalf in all matters relating to application for Equipment authorization, including the signing of all documents relating to these matters. All acts carried out by Shenzhen Accurate Technology Co., Ltd. on our behalf shall have the same effect as our own action. We, the undersigned, hereby certify that we are not subject to a denial of federal benefits, that includes FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. 862. This authorization is valid until further written notice from the applicant. Sincerely Yours, Client’s signature Printed Name: Justin Zhou Title: Testing and Compliance Director

QA-FR-172-A Anker Innovations Limited Add: Unit 56, 8th Floor, Tower 2, Admiralty Centre, 18 Harcourt Road, Hong Kong Tel: +86-75586544807 Email: [email protected] FCC Confidential Authorization Date: 2026-03-25 FEDERAL COMMUNICATIONS COMMISSION Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Subject: Confidentiality Request regarding application for certification of FCC ID:2AOKB-D2090 In accordance with Sections 0.457 and 0.459 of the Commission’s Rules, Anker Innovations Limited hereby requests long-term confidential treatment of information accompanying this application as outlined below:  Block Diagram  Schematics  Operation Description  BOM  Device Security Declaration As well as short-term (secrecy cycle: 180 days) confidential treatment of information accompanying this application as outlined below:  Internal Photos  User’s Manual  External Photos  Test Set-up Photos The above materials contain proprietary and confidential information not customarily released to the public. The public disclosure of these materials provides unjustified benefits to its competitors in the market. Sincerely, Signature Printed Name: Justin Zhou Title: Testing and Compliance Director

2.4mm 92.8mm 41.7mm

Note: This report must not be used by the customer to claim product certification, approval, or endorsement by A2LA, or any agency of the Federal Government. The information marked “#” is provided by the applicant, the laboratory is not responsible for its authenticity and this information can affect the validity of the result in the test report. Customer model name, addresses, names, trademarks etc. are included but no need marked. This report cannot be reproduced except in full, without prior written approval of the Company. Unless otherwise stated the results shown in this test report refer only to the sample(s) tested. This report is valid only with a valid digital signature. The digital signature may be available only under the Adobe software above version 7.0. Shenzhen Accurate Technology Co., Ltd. Floor 1, KuMaKe Building, Dongzhou Community, Guangming Street, Guangming District, Shenzhen, Guangdong, China. Tel: +86 755-26503290 Web: www.atc-lab.com Rev:A/4.0(2024/11/01) Page 1 of 7 TR-4-E-R052 TEST REPORT Applicant Name : Anker Innovations Limited Address : Unit 56, 8th Floor, Tower 2, Admiralty Centre, 18 Harcourt Road, Hong Kong Report Number : 2604P14347E-RF-00F FCC ID: 2AOKB-D2090 Test Standard (s) 47 CFR §2.1091 Sample Description Product Type: soundcore SpaceFlow Model No.: D2090 Trade Mark: soundcore Date Received: 2026-01-08 Report Date: 2026-03-13 Test Result: The EUT complied with the standards above. Prepared and Checked By: Approved By: Roger Ling Bob.Liao EMC Engineer EMC Engineer Shenzhen Accurate Technology Co., Ltd. Report No.: 2604P14347E-RF-00F Rev:A/4.0(2024/11/01) Page 2 of 7 TR-4-E-R052 TABLE OF CONTENTS DOCUMENT REVISION HISTORY ................................................................................................................ 3 GENERAL INFORMATION ............................................................................................................................ 4 PRODUCT DESCRIPTION FOR EQUIPMENT UNDER TEST (EUT) ........................................................................ 4 OBJECTIVE ................................................................................................................................................... 4 TEST FACILITY .............................................................................................................................................. 4 RF EXPOSURE .............................................................................................................................................. 5 APPLICABLE STANDARD ................................................................................................................................. 5 RESULT ........................................................................................................................................................ 5 EXHIBIT A-EUT PHOTOGRAPHS ................................................................................................................ 7 Shenzhen Accurate Technology Co., Ltd. Report No.: 2604P14347E-RF-00F Rev:A/4.0(2024/11/01) Page 3 of 7 TR-4-E-R052 DOCUMENT REVISION HISTORY Revision Number Report Number Description of Revision Date of Revision Rev.00 2604P14347E-RF-00F Original Report 2026-03-13 Shenzhen Accurate Technology Co., Ltd. Report No.: 2604P14347E-RF-00F Rev:A/4.0(2024/11/01) Page 4 of 7 TR-4-E-R052 GENERAL INFORMATION Product Description for Equipment under Test (EUT) Product soundcore SpaceFlow Tested Model D2090 Frequency Range Bluetooth & BLE: 2402-2480MHz 2.4G Wi-Fi: 2412-2462MHz 5G Wi-Fi: 5150-5250MHz 5250-5350MHz 5470-5725MHz 5725-5850MHz Maximum Conducted Output Power Bluetooth: 5.59 dBm BLE: 4.4 dBm 2.4G Wi-Fi: 27.37 dBm 5150-5250MHz: 14.45 dBm 5250-5350MHz: 16.27 dBm 5470-5725MHz: 14.96 dBm 5725-5850MHz: 17.40 dBm Antenna Specification # Bluetooth & BLE: 3.96dBi 2.4G Wi-Fi: ANT0: 2.88dBi, ANT1: 0.96dBi 5150-5250MHz: Ant0:1.96dBi; Ant1:2.94dBi 5250-5350MHz: Ant0:2.22dBi; Ant1:3.16dBi 5470-5725MHz: Ant0:4.36dBi; Ant1:3.66dBi 5725-5850MHz: Ant0:3.97dBi; Ant1:3.8dBi (It is provided by the manufacturer.) Voltage Range # DC 5-20V from adapter Sample Serial Number For RF Conducted Test: 3FTJ-6 (Assigned by ATC, Shenzhen) Sample/EUT Status Good condition Adapter Information # Model: NSA45EU-20022500 Input: 100-240V~ 50/60Hz 12A Output: 5.0V3.0A/9.0V3.0A/12.0V3.0A/15.0V3.0A/20.0V 2.25A 45.0W Max Objective This test report is in accordance with Part 2-Subpart J, Part 15-Subparts C and Part 2-Subpart J, Radiofrequency Radiation Exposure of the Federal Communication Commission rules. The tests were performed in order to determine compliance with FCC §2.1091 rules. Test Facility The test site used by Shenzhen Accurate Technology Co., Ltd. to collect test data is located on the Floor 1, KuMaKe Building, Dongzhou Community, Guangming Street, Guangming District, Shenzhen, Guangdong, China. Accredited by American Association for Laboratory Accreditation (A2LA).The Certificate Number is 4297.01. Shenzhen Accurate Technology Co., Ltd. Report No.: 2604P14347E-RF-00F Rev:A/4.0(2024/11/01) Page 5 of 7 TR-4-E-R052 RF EXPOSURE Applicable Standard According to subpart 2.1091 systems operating under the provisions of this section shall be operated in a manner that ensures the public is not exposed to RF energy level in excess of the communication guidelines. Limits for General Population/Uncontrolled Exposure Limits for General Population/Uncontrolled Exposure Frequency Range (MHz) Electric Field Strength (V/m) Magnetic Field Strength (A/m) Power Density (mW/cm 2 ) Averaging Time (Minutes) 0.3-1.34 614 1.63 *(100) 30 1.34-30 824/f 2.19/f *(180/f 2 ) 30 30-300 27.5 0.073 0.2 30 300-1500 / / f/1500 30 1500-100,000 / / 1.0 30 f = frequency in MHz * = Plane-wave equivalent power density Result Calculated Formulary: Predication of MPE limit at a given distance S = 2 4R PG  S = power density (in appropriate units, e.g. mW/cm2) P = power input to the antenna (in appropriate units, e…

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0 Without the permission of our company, it is strictly prohibited to copy this document in any manne SPECIFICATION FOR APPROVAL Customer Admit confirm ID DepartmentTest departmentStructure sectionQuality department Supplier Admit confirm confirmProofreadingTo examineApproval ZiyehuiYangguochangXuliying APPROVAL No.ATCSZ-5-180124-001ISSUE1 DESCRIBE: Anker Innovations Co., LTD （ D2090) Customer NO: PART NO: ATC1548-AK016B72RA Antenna type: BT-Ant FPC +Cable(Gray) DATE: 2025.12.30 PROVIDER: AT&C Technology (Shenzhen) Co. 201, Building C, Chuangwei Innovation Valley, No.1 Tangtou Road, Shiyan Street, Bao'an District, Shenzhen, China 1 Without the permission of our company, it is strictly prohibited to copy this document in any manne Testing equipment Bt antenna 2 CustomerAnkerWritten By ZYHOrig. Date2025.12.30 Part Number ATC1548-AK016B72RARevised BySHINRevised Date2025.12.30 DescriptionBT ANTApproved ByHJApproved Date2025.12.30 Without the permission of our company, it is strictly prohibited to copy this document in any manne BOM Customer numberATC numberPart name ATC1548-AK016B72RA 26.53*23.20*0.12, PI+CU， Welding gray coaxial line, wire diameter 1.13, wire length 80mm, equipped with first generation terminals 3 CustomerAnkerWritten By ZYHOrig. Date2025.12.30 Part Number ATC1548-AK016B72RARevised BySHINRevised Date2025.12.30 DescriptionBT ANTApproved ByHJApproved Date2025.12.30 Without the permission of our company, it is strictly prohibited to copy this document in any manne Impedance Matching 4 CustomerAnkerWritten By ZYHOrig. Date2025.12.30 Part Number ATC1548-AK016B72RARevised BySHINRevised Date2025.12.30 DescriptionBT ANTApproved ByHJApproved Date2025.12.30 Without the permission of our company, it is strictly prohibited to copy this document in any manne S11/VSWR 5 CustomerAnkerWritten By ZYHOrig. Date2025.12.30 Part Number ATC1548-AK016B72RARevised BySHINRevised Date2025.12.30 DescriptionBT ANTApproved ByHJApproved Date2025.12.30 Without the permission of our company, it is strictly prohibited to copy this document in any manne Antenna *Efficiency BT FreEffiEffi.dBGain.dBi 2400-3.3846%3.96 2410-3.2348%3.77 2420-3.2348%3.65 2430-3.2647%3.46 2440-3.2747%3.62 2450-3.1948%3.28 2460-3.2148%3.15 2470-3.3646%2.74 2480-3.5244%2.82 2490-3.7242%2.68 2500-3.8641%3.29 6 CustomerAnkerWritten By ZYHOrig. Date2025.12.30 Part Number ATC1548-AK016B72RARevised BySHINRevised Date2025.12.30 DescriptionBT ANTApproved ByHJApproved Date2025.12.30 Without the permission of our company, it is strictly prohibited to copy this document in any manne 2D Radiation Pattern Theta 90 7 CustomerAnkerWritten By ZYHOrig. Date2025.12.30 Part Number ATC1548-AK016B72RARevised BySHINRevised Date2025.12.30 DescriptionBT ANTApproved ByHJApproved Date2025.12.30 Without the permission of our company, it is strictly prohibited to copy this document in any manne 2D Radiation Pattern Ph 0 8 CustomerAnkerWritten By ZYHOrig. Date2025.12.30 Part Number ATC1548-AK016B72RARevised BySHINRevised Date2025.12.30 DescriptionBT ANTApproved ByHJApproved Date2025.12.30 Without the permission of our company, it is strictly prohibited to copy this document in any manne 2D Radiation Pattern Ph 90 9 CustomerAnkerWritten By ZYHOrig. Date2025.12.30 Part Number ATC1548-AK016B72RARevised BySHINRevised Date2025.12.30 DescriptionBT ANTApproved ByHJApproved Date2025.12.30 Without the permission of our company, it is strictly prohibited to copy this document in any manne 3D Radiation Pattern 2450 10 Without the permission of our company, it is strictly prohibited to copy this document in any manne Ant Draw 11 Without the permission of our company, it is strictly prohibited to copy this document in any manne AT&C TECHNOLOGIES(SHENZHEN) CO. LTD Salt spray test report Customer NameAnker （ D2090 ） Specification and ATC1548-AK016B72RA Sample situation Sample quantity: 3PCS Substrate: PICoating: OSP Test start and end timeFrom 10:00 on December 1, 2025 to 10:00 on December 3, 2025, 48 hours Test type■ NSS□ ASS□ CASS Test conditions Salt solution ratio: 5% ± 1% PH:6.5 ～ 7.2 Temperature inside the box: 35 ° C Relative humidity: 85% ± 2% Spray mode: ■ Continuous □ Intermittent Compressed air pressure: 1kg/cm ² Spray volume: 1.0 ～ 2.0ML/80CM2/H Test object placement angle: 30 degrees+/-10 degrees Test cycle: __ cycles Spray time: 48 h Placement time: 2 hours Judgment criteria Appearance: intact and undamaged, with no significant changes. Coating: No oxidation, rust, discoloration, or corrosion spots. Screen printing: No shedding or bubbles. Test results Appearance after test: The appearance is intact and undamaged, with no significant changes. Coating: No peeling or rusting Surface spraying and screen printing: no peeling or bubbles. Explanation: 1. The salt spray test operation standard shall be executed in accordance with the national standard GB/T2423.17-2008 of the People's Republic of China 2. The criteria for determining test specimen results shall be in accordance with the national standard GB/T6461-02 of the People's Republic of China Tester: Zhang Luo Reviewed by: Liang Houbo 12 Without the permission of our company, it is strictly prohibited to copy this document in any manne Antenna Component Production Process Flow NoProcess Name Using equipment, fixtures, and tooling Inspection itemsControl factorReference standards Inspection frequency 1 FPC incoming materials Anime or caliper critical dimensionReference drawings1 Common appearance defects of FPC components Refer to relevant inspection standardsAQL0.65 Peel off of adhesive backing ≥5Kg/f2 Material model, RoHS compliance Reference drawingsOnce 2 Same axis incoming material Anime or caliper critical dimensionReference drawings1 Common appearance defects of coaxial components Refer to relevant inspection standardsAQL0.65 Wire head welding Easy to weld, no oxidation, poor welding quality, etc 2 Material model, RoHS compliance Reference drawingsOnce 3Coaxial welding Soldering iron, tin wire Soldering ir…

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Note: This report must not be used by the customer to claim product certification, approval, or endorsement by A2LA, or any agency of the Federal Government. The information marked “#” is provided by the applicant, the laboratory is not responsible for its authenticity and this information can affect the validity of the result in the test report. Customer model name, addresses, names, trademarks etc. are included but no need marked. This report cannot be reproduced except in full, without prior written approval of the Company. Unless otherwise stated the results shown in this test report refer only to the sample(s) tested. This report is valid only with a valid digital signature. The digital signature may be available only under the Adobe software above version 7.0. This report may contain data that are not covered by the accreditation scope and shall be marked with ▲.This report must not be used by the client to claim product certification, approval, or endorsement by A2LA, or any agency of the U.S. Government. Each test item follows the test standard(s) without deviation. Shenzhen Accurate Technology Co., Ltd. Floor 1, KuMaKe Building, Dongzhou Community, Guangming Street, Guangming District, Shenzhen, Guangdong, China. Tel: +86 755-26503290 Web: www.atc-lab.com Rev:A/4.1(2025/12/12) Page 1 of 80 TR-4-E-R135 TEST REPORT Applicant Name: Anker Innovations Limited Address: Unit 56, 8th Floor, Tower 2, Admiralty Centre, 18 Harcourt Road, Hong Kong Report Number: 2604P14347E-RFA FCC ID: 2AOKB-D2090 IC: 23451-D2090 Test Standard (s) FCC PART 15.247 RSS-247 ISSUE 4, JULY 24, 2025 RSS-GEN ISSUE 5, FEBRUARY 2021 AMENDMENT 2 Sample Description Product Name: soundcore SpaceFlow Model No.: D2090 Trade Mark: soundcore Date Received: 2026-01-08 Report Date: 2026-04-02 Test Result: The EUT complied with the standards above. Prepared and Checked By: Approved By: Roger Ling Bob.Liao EMC Engineer EMC Engineer Shenzhen Accurate Technology Co., Ltd. Report No.: 2604P14347E-RFA Rev:A/4.1(2025/12/12) Page 2 of 80 TR-4-E-R135 TABLE OF CONTENTS DOCUMENT REVISION HISTORY ................................................................................................................ 4 GENERAL INFORMATION ............................................................................................................................ 5 PRODUCT DESCRIPTION FOR EQUIPMENT UNDER TEST (EUT) ........................................................................ 5 OBJECTIVE ................................................................................................................................................... 6 TEST METHODOLOGY .................................................................................................................................... 6 TEST FACILITY .............................................................................................................................................. 6 MEASUREMENT UNCERTAINTY ....................................................................................................................... 6 SYSTEM TEST CONFIGURATION ............................................................................................................... 7 DESCRIPTION OF TEST CONFIGURATION ......................................................................................................... 7 EUT EXERCISE SOFTWARE AND POWER LEVEL # ............................................................................................ 7 SPECIAL ACCESSORIES AND EQUIPMENT MODIFICATIONS ............................................................................... 7 SUPPORT EQUIPMENT LIST AND DETAILS ....................................................................................................... 7 EXTERNAL I/O CABLE .................................................................................................................................... 7 BLOCK DIAGRAM OF TEST SETUP .................................................................................................................. 8 SUMMARY OF TEST RESULTS ................................................................................................................. 10 TEST EQUIPMENT LIST ............................................................................................................................. 11 ANTENNA REQUIREMENT ........................................................................................................................ 13 APPLICABLE STANDARD ............................................................................................................................... 13 ANTENNA CONNECTOR CONSTRUCTION ....................................................................................................... 13 AC LINE CONDUCTED EMISSIONS .......................................................................................................... 14 APPLICABLE STANDARD ............................................................................................................................... 14 EUT SETUP ................................................................................................................................................ 14 EMI TEST RECEIVER SETUP ........................................................................................................................ 14 TEST PROCEDURE ...................................................................................................................................... 14 CALCULATION ............................................................................................................................................. 15 TEST DATA ................................................................................................................................................. 15 RADIATED SPURIOUS EMISSIONS .......................................................................................................... 1…

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