2BA4B-FREEBEATSOPEN TWS EARPHONE

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. FCC warning: 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. The device has been evaluated to meet general RF exposure requirement. The device can be used in portable exposure condition without restriction.

Shenzhen Daikang Technology Co., Ltd. 2.911 (d)(5)(i) Equipment Type Attestation v1.2 Section 2.911(d)(5)(i) Certification – EquipmentType Company name:Shenzhen Daikang Technology Co., Ltd. Address:Building i, No. 10, East District, Shangxue S&T Park,Bantian Street, Longgang District, Shenzhen Guangdong China 518000 Product Name: OPEN TWS EARPHONE FCCID: 2BA4B-FREEBEATS Model(s): FreeBeats, FreeBeats Lite, FreeBeats Pro, FreeBeats Plus, FreeBeats Air 2.911(d)(5)(i) EquipmentType We, [Shenzhen Daikang Technology Co., Ltd.] (“the applicant”) certify that the equipment for which authorization is sought through certification is not:  Prohibited from receiving an equipment authorization pursuant to § 2.903; of the FCC rules.  Identified as an equipment type in the “Covered List” NOTE 1 Yours sincerely, Name: dongwen Zhong Date: 2023/07/12 Title and Company name: Product Manager /Shenzhen Daikang Technology Co., Ltd. NOTE 1 “Covered List”; is the List of Equipment and Services Covered By Section 2 of The Secure Networks Act, available at https://www.fcc.gov/supplychain/coveredlist References; 1) 986446 D01 Covered Equipment v01 https://apps.fcc.gov/oetcf/kdb/forms/FTSSearchResultPage.cfm?switch=P&id=325672 2) Federal Register document 2022-28263 published on 02/06/23 https://www.federalregister.gov/documents/2023/02/06/2022-28263/protecting-against-national-security-threats-to-the-com munications-supply-chain-through-the

Shenzhen Daikang Technology Co., Ltd. 2.911 (d)(5)(ii) Applicant Attestation v1.2 Section 2.911(d)(5)(ii) Certification – Applicant (Covered List ) Company name:Shenzhen Daikang Technology Co., Ltd. Address:Building i, No. 10, East District, Shangxue S&T Park,Bantian Street, Longgang District, Shenzhen Guangdong China 518000 Product Name: OPEN TWS EARPHONE FCCID: 2BA4B-FREEBEATS Model(s): FreeBeats, FreeBeats Lite, FreeBeats Pro, FreeBeats Plus, FreeBeats Air 2.911(d)(5)(ii) Applicant filing We, [Shenzhen Daikang Technology Co., Ltd.] (“the applicant”) certify that, as of the date of the filing of the application, the applicant is not identified NOTE 1 on the “Covered List” NOTE 2 ,established pursuant to §1.50002 of this chapter,as an entity producing coveredcommunications equipment. Yours sincerely, Name: dongwen Zhong Date: 2023/07/12 Title and Company name: Product Manager / Shenzhen Daikang Technology Co., Ltd. NOTE 1 Delete option not applicable to this application. NOTE 2 “Covered List”; is the List of Equipment and Services Covered By Section 2 of The Secure Networks Act, available at https://www.fcc.gov/supplychain/coveredlist References; 1) 986446 D01 Covered Equipment v01 https://apps.fcc.gov/oetcf/kdb/forms/FTSSearchResultPage.cfm?switch=P&id=325672 2) Federal Register document 2022-28263 published on 02/06/23 https://www.federalregister.gov/documents/2023/02/06/2022-28263/protecting-against-national-security-threats-to-the-com munications-supply-chain-through-the

Shenzhen Daikang Technology Co., Ltd. Authorization Company:Shenzhen Daikang Technology Co., Ltd. Address:Building i, No. 10, East District, Shangxue S&T Park,Bantian Street, Longgang District, Shenzhen Guangdong China 518000 Product Name: OPEN TWS EARPHONE Model Number(s): FreeBeats, FreeBeats Lite, FreeBeats Pro, FreeBeats Plus, FreeBeats Air We authorize MiCOM Labs Inc., 575 Boulder Court, Pleasanton, California 94566, USA, to act on our behalf on all matters concerning the certification of above named equipment. We declare that MiCOM Labs Inc. is allowed to forward all information related to the approval and certification of equipment to the regulatory agencies as required and to discuss any issues concerning the approval application. Any and all acts carried out by MiCOM Labs on our behalf shall have the same effect as acts of our own. Signature: Date: 2023/07/12 Name: dongwen Zhong Title: Product Manager Company: Shenzhen Daikang Technology Co., Ltd.

Shenzhen Daikang Technology Co., Ltd. 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: IQUA QUDIO LIMITED FRN: 0033790908 Contact Name: CHAUNGCHAO YANG Address: 5301 LIMESTONE ROAD #150 WILMINGTON,DE19808 Telephone No: （917）888-3788 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:2023-07-12 Signed by (Printed Name/Title):CHAUNGCHAO YANG / 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: Shenzhen Daikang Technology Co., Ltd. FCC ID: 2BA4B-FREEBEATS Contact Name: dongwen Zhong Address: Building i, No. 10, East District, Shangxue S&T Park,Bantian Street, Longgang District, Shenzhen Guangdong China 518000 Telephone No: 15016731314 Email: [email protected] Applicant Signature: Date: 2023-07-12 Signed by (Printed Name/Title): dongwen Zhong / Product Manager

Declaration on model difference We the undersigned hereby confirm that any of our production units bearing the following model numbers are identical in circuitry and electrical, mechanical and physical construction; The difference is only in model names. FCC ID: 2BA4B-FREEBEATS Production name Trade name Model no. OPEN TWS EARPHONE N/A FreeBeats, FreeBeats Lite, FreeBeats Pro, FreeBeats Plus, FreeBeats Air Confirmed by：Shenzhen Daikang Technology Co., Ltd. Signature : Date: 2023/07/12 Name: dongwen Zhong Title: Product Manager Company: Shenzhen Daikang Technology Co., Ltd.

Shenzhen Daikang Technology Co., Ltd. Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 2023/07/12 Subject; Request for Confidentiality FCC ID: 2BA4B-FREEBEATS To Whom It May Concern, Pursuant to the provisions of the Commission’s rules Title 47 Sections §0.457 and §0.459, we are requesting the Commission to withhold the following attachment(s) as confidential documents from public disclosure indefinitely. These documents contain detailed system and equipment descriptions and are considered as proprietary information in operation of the equipment. The public disclosure of these documents might be harmful to our company and would give competitors an unfair advantage in the market. Schematic Diagram Block Diagram Operational Description In additional to above mentioned documents, in order to comply with the marketing regulations in Title 47 CFR §2.803 and the importation rules in Title 47 CFR §2.1204, while ensuring that business sensitive information remains confidential until the actual marketing of newly authorized devices, we request Short Term Confidentiality of the following attachment(s); User Manual For 45 days, pursuant to Public Notice DA 04-1705. OR For 180 dayspursuantto KDB 726920 D01. It is our understanding that all measurement test reports, FCC ID label format and correspondence during the certification review process cannot be granted as confidential documents and this information will be available for public review once the grant of equipment authorization is issued. Sincerely, Signature: Name: dongwen Zhong Title: Product Manager Company name: Shenzhen Daikang Technology Co., Ltd.

EUT EXTERNAL PHOTOGRAPHS EUT View 1 EUT View 2 EUT View 3 EUT View 4 Right EUT View 5 EUT View 6 EUT View 7 EUT View 8 EUT View 9 EUT View 10 Left EUT View 11 EUT View 12 EUT View 13 EUT View 14 EUT View 15 EUT View 16 ----------------The end----------------

Dimension：25*4.9mm FCC ID: 2BA4B-FREEBEATS

EUT INTERNAL PHOTOGRAPHS Left EUT Housing and Board View 1 EUT Housing and Board View 2 EUT Housing and Board View 3 EUT Housing and Board View 4 EUT Housing and Board View 5 EUT Housing and Board View 6 Right EUT Housing and Board View 1 EUT Housing and Board View 2 EUT Housing and Board View 3 EUT Housing and Board View 4 EUT Housing and Board View 5 EUT Housing and Board View 6 ----------------The end---------------- Antenna

FCC ID: 2BA4B-FREEBEATS Portable device According to § 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. According to KDB447498 D01 General RF Exposure Guidance V06 The 1-g and 10-g SAR test exclusion thresholds for 100 MHz to 6 GHz at test separation distances ≤ 50 mm are determined by: [(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 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 is applied to determine SAR test exclusion. We use 5mm as separation distance to calculate. Maximum measured transmitter power: BT Channel Freq. (MHz) Max Transmit Power (dBm) Max tune-up power (dBm) Result calculation 1-g SAR GFSK 2402 1.68 2 0.49 3.0 2441 2.98 3 0.62 3.0 2480 3.45 4 0.79 3.0 pi/4-DQPSK 2402 2.59 3 0.62 3.0 2441 3.87 4 0.78 3.0 2480 4.34 5 0.99 3.0 Conclusion: For the max result : 0.99≤ 3.0 for 1-g SAR extremity SAR, No SAR is required.

SymbolsLWTA Dimensions 1.60±0.200.80±0.200.80±0.200.30±0.10 NumberTerminalName ① INPUT ② NC ✓Dimensions(Unit: mm) w ①② ( Side View) ( Bottom View) ( Top View) A T L HanyangAntennaDesignCo.Ltd.haspossessionofproprietaryinformationprovidedinthisreportand thisproprietaryinformationshallbekeptinstrictconfidenceandnotdisclosedtoanypersonorfirm withoutthepriorwrittenconsentofHanyangAntennaDesignCo.Ltd. Page1 汉阳天线设计有限公司 HanyangAntenna Design Co. Ltd. 1.Bluetooth 2.Dual-band WLAN 3.ISM and UWB 1.Surfacemountedelementwithasmalldimensionof1.6×0.8×0.8mmmeetfutureminiaturizationtrend. 2.EmbeddedandLTCC(lowtemperatureco-firedceramic)technologyisabletointegratewithsystemdesign aswellasbeatifyingthehousingoffinalproduct. 3.Miniaturization,wideband,highstability,lowESR,andlowtolerance. 4.Dual-bandresonancesinthedominantandharmonicmodesenablesmultibandoperations. 5.Novelground-radiationtechniqueenablesradiationfromboththeantennaandthegroundplane. ▪深圳市宝安区前进二路宝运达物流信息大厦12A10/12A11 ▪青岛市崂山区松岭路399号海信产业园A1号楼606 电话：0755-23069700 传真：0755-23069700 P/N: HY160808 SRF09 ✓Features: ✓Applications: RF chip ANT chipANT pattern PCB ground Mode-2 Mode-1 ✓Layout-1 (3.5mm×6.5mm) HanyangAntennaDesignCo.Ltd.haspossessionofproprietaryinformationprovidedinthisreportand thisproprietaryinformationshallbekeptinstrictconfidenceandnotdisclosedtoanypersonorfirm withoutthepriorwrittenconsentofHanyangAntennaDesignCo.Ltd. Page2 汉阳天线设计有限公司 HanyangAntenna Design Co. Ltd. 1.5 1 3.5 2.5 0201 footprint (E1) 0201 footprint (E2) 0603 footprint (ANT) 连接微带线， 连接RF I/O口 6.5 0.5 0.5 0.5 1.5 3.5 2.5 0201 footprint (E3) 6.5 Top layer: Bottom layer: 0.5 0.5 RF chip E1 E3 E2 ANT ▪深圳市宝安区前进二路宝运达物流信息大厦12A10/12A11 ▪青岛市崂山区松岭路399号海信产业园A1号楼606 电话：0755-23069700 传真：0755-23069700 P/N: HY160808 SRF09 Equivalentcircuit: HanyangAntennaDesignCo.Ltd.haspossessionofproprietaryinformationprovidedinthisreportand thisproprietaryinformationshallbekeptinstrictconfidenceandnotdisclosedtoanypersonorfirm withoutthepriorwrittenconsentofHanyangAntennaDesignCo.Ltd. Page3 汉阳天线设计有限公司 HanyangAntenna Design Co. Ltd. 2.5 0201 footprint 0603 footprint 连接微带线， 连接RF I/O口 10 0.5 1.5 0201 footprint 1.5 3 2.5 10 1.5 2 0.5 0201 footprint ▪深圳市宝安区前进二路宝运达物流信息大厦12A10/12A11 ▪青岛市崂山区松岭路399号海信产业园A1号楼606 电话：0755-23069700 传真：0755-23069700 P/N: HY160808 SRF09 ✓Layout-2 (1.5mm×10mm) Top layer: Bottom layer: HanyangAntennaDesignCo.Ltd.haspossessionofproprietaryinformationprovidedinthisreportand thisproprietaryinformationshallbekeptinstrictconfidenceandnotdisclosedtoanypersonorfirm withoutthepriorwrittenconsentofHanyangAntennaDesignCo.Ltd. Page4 汉阳天线设计有限公司 HanyangAntenna Design Co. Ltd. ▪深圳市宝安区前进二路宝运达物流信息大厦12A10/12A11 ▪青岛市崂山区松岭路399号海信产业园A1号楼606 电话：0755-23069700 传真：0755-23069700 P/N: HY160808 SRF09 5 2 0201 footprint (E1) 0201 footprint (E2) 0603 footprint (ANT) 连接微带线， 连接RF I/O口 7 0.8 5 0201 footprint (E2) 连接微带线， 连接RF I/O口 10 0.8 0603 footprint (ANT) 0201 footprint (E1) ✓Layout-3 (5mm×7mm) ✓Layout-4 (5mm×10mm) 1 3 ✓ElectricalCharacteristics: ✓CharacteristicCurves: FeatureSpecification 1 Centralfrequency2.45GHz&5.5GHz 2 Bandwidth>150MHz 3 Peak gain2~3dBi 4 VSWR<2 5 PolarizationLinear 6 AzimuthbeamwidthOmnidirectional 7 Impedance50Ω HanyangAntennaDesignCo.Ltd.haspossessionofproprietaryinformationprovidedinthisreportand thisproprietaryinformationshallbekeptinstrictconfidenceandnotdisclosedtoanypersonorfirm withoutthepriorwrittenconsentofHanyangAntennaDesignCo.Ltd. Page5 汉阳天线设计有限公司 HanyangAntenna Design Co. Ltd. ▪深圳市宝安区前进二路宝运达物流信息大厦12A10/12A11 ▪青岛市崂山区松岭路399号海信产业园A1号楼606 电话：0755-23069700 传真：0755-23069700 P/N: HY160808 SRF09 ✓RadiationPattern: Y-ZPlane X-ZPlane coordinates： ▪深圳市宝安区前进二路宝运达物流信息大厦12A10/12A11 ▪青岛市崂山区松岭路399号海信产业园A1号楼606 电话：0755-23069700 传真：0755-23069700 HanyangAntennaDesignCo.Ltd.haspossessionofproprietaryinformationprovidedinthisreportand thisproprietaryinformationshallbekeptinstrictconfidenceandnotdisclosedtoanypersonorfirm withoutthepriorwrittenconsentofHanyangAntennaDesignCo.Ltd. Page6 汉阳天线设计有限公司 HanyangAntenna Design Co. Ltd. Frequency 2450MHz5500MHz Avg.gain-0.85-1.30 Peakgain3.03.5 Efficiency82%78% ✓RadiationPerformance: P/N: HY160808 SRF09 Temperature：40±2°C Humidity：90~95%RH Duration：500h Recovery conditions：Room temperature Recovery Time：24h (Class1) or 48h (Class2) Test Temperature Operating Temperature Temperature RelativeHumidity 25°C±5°C -25°C~+125°C 5~40°C 20~70% Notenoughsolder Weak holding forcemay cause bad connection between the chipandPCB. ✓RecommendedSolderingAmounts The optimal solder fillet amounts forre-flowsoldering 天线厚度 以下 The optimal solder fillet amounts for wavesoldering ✓DependabilityTest Too much solder Cracks tend to occur due to large stress. ✓MoistureProof ✓OptimumSolderAmount forReflowSoldering ✓Solderability At least 95% of the terminal electrode is covered by newsolder. Preheating conditions:80 to 120°C;10~30s. Solder Tem p e r at u r e :2 3 5 ±5°C Duration:2 ±0.5s , Solder Tempe r ature:24 5±5°C Du rat ion:2±0.5s HanyangAntennaDesignCo.Ltd.haspossessionofproprietaryinformationprovidedinthisreportand thisproprietaryinformationshallbekeptinstrictconfidenceandnotdisclosedtoanypersonorfirm withoutthepriorwrittenconsentofHanyangAntennaDesignCo.Ltd. Page7 汉阳天线设计有限公司 HanyangAntenna Design Co. Ltd. ▪深圳市宝安区前进二路宝运达物流信息大厦12A10/12A11 ▪青岛市崂山区松岭路399号海信产业园A1号楼606 电话：0755-23069700 传真：0755-23069700 P/N: HY160808 SRF09 10±1S AppliedForce:5NDuration:10±1S Preheating conditions: up-category temperature, 1h Recovery time:24±1h InitialMeasurement Cycling Times: 5 times, 1 cycle, 4steps: Preheating80to120°C;10~30s.SolderTemperature:235±5°C;Duration:2±0.5s;SolderTemperature:245±5°C Duration:2±0.5s;Preheating100to200°C;10±2min. SolderTemperature:265±5°C;Duration:10±1s Cleanthecapacitorwithsolventandexamineitwitha10X(min.)microscope. RecoveryTime:24±2h Recoverycondition:Roomtemperature Test Board: Al 2 O 3 orPCBWarp:1mm Speed:0.5mm/sec. Unit:mm Themeasurementshouldbemadewiththeboardinthe bendingposition. ✓Resistance to Soldering Heat ✓ResistancetoFlexureofSubstrate ✓Temperature CycleTest H…

Text truncated - open the document above for the full version.

No.：BCTC/RF-EMC-007 Page: 1 of 65 Edition：A.4 TEST REPORT Shenzhen BCTC Testing Co., Ltd. Report No.: BCTC2306207744E Applicant: Shenzhen Daikang Technology Co., Ltd. Product Name: OPEN TWS EARPHONE Model/Type Reference: FreeBeats Tested Date: 2023-06-25 to 2023-07-11 Issued Date: 2023-07-31 Report No.: BCTC2306207744E No.：BCTC/RF-EMC-007 Page: 2 of 65 Edition：A.4 FCC ID: 2BA4B-FREEBEATS 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: OPEN TWS EARPHONE Trademark: Dacom Model/Type Reference: FreeBeats, FreeBeats Lite, FreeBeats Pro, FreeBeats Plus, FreeBeats Air Prepared For: Shenzhen Daikang Technology Co., Ltd. Address: Building i, No. 10, East District, Shangxue S&T Park,Bantian Street, Longgang District, Shenzhen Guangdong China 518000 Manufacturer: Shenzhen Sande Dacom Electronics Co.,Ltd. Address: Building i, No. 10, East District, Shangxue S&T Park,Bantian Street, Longgang District, Shenzhen Guangdong China 518000 Prepared By: Shenzhen BCTC Testing Co., Ltd Address: 1-2/F., Building B, Pengzhou Industrial Park, No.158, Fuyuan 1st Road, Tangwei, Fuhai Subdistrict, Bao'an District, Shenzhen, Guangdong, China Sample Received Date: 2023-06-25 Sample Tested Date: 2023-06-25 to 2023-07-11 Report No.: BCTC2306207744E Test Standards FCC Part15.247 ANSI C63.10-2013 Test Results PASS Remark: This is Bluetooth Classic radio test report. Tested by: Approved by: Lei Chen/Project Handler Zero Zhou/Reviewer Report No.: BCTC2306207744E No.：BCTC/RF-EMC-007 Page: 3 of 65 Edition：A.4 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 .......................................................................................................... 20 8. Radiated Band Emission Measurement and Restricted Bands of Operation ...... 24 8.1 Block Diagram Of Test Setup .............................................................................. 24 8.2 Limit .................................................................................................................... 24 8.3 Test procedure .................................................................................................... 25 8.4 EUT operating Conditions ................................................................................... 25 8.5 Test Result .......................................................................................................... 26 9. Spurious RF Conducted Emissions ..................................................................... 27 9.1 Block Diagram Of Test Setup .............................................................................. 27 9.2 Limit .................................................................................................................... 27 9.3 Test procedure .................................................................................................…

Text truncated - open the document above for the full version.