2AX2R-FI-EVATWTrue Wireless Earphone

True Wireless Earphone FI-EVATW EVATW01 EVATW01EVATW01 EVATW01 9 FCC Statement Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. 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 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.

finalInc. OfficeofEngineeringTechnology FederalCommunicationsCommission 7435OaklandMillsRoad Columbia,MD21046 USA Date:2022-04-22 Subject;RequestforLongTermConfidentiality FCCID:2AX2R-FI-EVATW ToWhomItMayConcern, PursuanttotheprovisionsoftheCommission’srulesTitle47Sections§0.457and§0.459,we arerequestingtheCommissiontowithholdthefollowingattachment(s)asconfidential documentsfrompublicdisclosureindefinitely. Thesedocumentscontaindetailedsystemandequipmentdescriptionsandareconsideredas proprietaryinformationinoperationoftheequipment.Thepublicdisclosureofthesedocuments mightbeharmfultoourcompanyandwouldgivecompetitorsanunfairadvantageinthemarket. SchematicDiagram BlockDiagram PartsList OperationalDescription Tune-upProcedure Itisourunderstandingthatallmeasurementtestreports,FCCIDlabelformatand correspondenceduringthecertificationreviewprocesscannotbegrantedasconfidential documentsandthisinformationwillbeavailableforpublicreviewoncethegrantofequipment authorizationisissued. Sincerely, Signature: Name:NakamichiTakashi Title:Manager

finalInc. 4-44-1,Nakasaiwai-cho,Saiwai-Ku,Kawasaki-shi,Kanagawa,212-0012,Japan Statement Product:TrueWirelessEarphone ModelNo.:FI-EVATW AdditionalModelNo.:EVATWREI,EVATWNV,EVATW01,EVWTW02,EVATW06 TradeMark:final WeherebystatethatAllmodelsaboveareidenticalininteriorstructure,electricalcircuitsand components,andjustmodelnamesaredifferentforthemarketingrequirement. Yourassistanceonthismatterishighlyappreciated. Yourssincerely, Signature: Date:2022/04/22 Name:NakamichiTakashi Company:finalInc. Address:4-44-1,Nakasaiwai-cho,Saiwai-Ku,Kawasaki-shi,Kanagawa,212-0012,Japan Tel/Fax:0081-44-789-5795/044-789-5770 E-Mail:[email protected]

finalInc. AgentAuthorization Company:finalInc. Address:4-44-1,Nakasaiwai-cho,Saiwai-Ku,Kawasaki-shi,Kanagawa,212-0012, Japan ProductName:TrueWirelessEarphone ModelNumber(s):FI-EVATW,EVATWREI,EVATWNV,EVATW01,EVWTW02, EVATW06 ProductDescription:TrueWirelessEarphone WeauthorizeMiCOMLabsInc.,575BoulderCourt,Pleasanton,California94566,USA, toactonourbehalfonallmattersconcerningthecertificationofabovenamed equipment. WedeclarethatMiCOMLabsInc.isallowedtoforwardallinformationrelatedtothe approvalandcertificationofequipmenttotheregulatoryagenciesasrequiredandto discussanyissuesconcerningtheapprovalapplication.Anyandallactscarriedoutby MiCOMLabsonourbehalfshallhavethesameeffectasactsofourown. Signature:Date:2022-04-22 Name:NakamichiTakashi Title:Manager Company:finalInc.

Page 1 of 7 Appendix C: Photographs of EUT Product: True Wireless Earphone Model: FI-EVATW External Photos Page 2 of 7 Page 3 of 7 Page 4 of 7 Page 5 of 7 Page 6 of 7 Page 7 of 7

LabelArtworkandLocation Model:FI-EVATW Label: Size:L*W=12*4mm FCCID:2AX2R-FI-EVATW Location

Page 1 of 4 Appendix C: Photographs of EUT Product: True Wireless Earphone Model: FI-EVATW Internal Photos Antenna Page 2 of 4 Page 3 of 4 Page 4 of 4

Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com TEST REPORT FCC ID. ............................ : 2AX2R-FI-EVATW Test Report No. ............... : TCT220406E014 Date of issue ................... : Apr. 21, 2022 Testing laboratory .......... : SHENZHEN TONGCE TESTING LAB Testing location/ address: TCT Testing Industrial Park Fuqiao 5th Industrial Zone, Fuhai Street, Bao'an District Shenzhen, Guangdong, 518103, People's Republic of China Applicant's name ............ : final Inc. Address ........................... : 4-44-1, Nakasaiwai-cho, Saiwai-Ku, Kawasaki-shi, Kanagawa, 212-0012, Japan Manufacturer's name ... : SHENZHEN SHI KISB ELECTRONIC CO., LTD. Address ........................... : F4, 5, BlockB, F3, Building A, Shanghe Industrial Park, Nanchang Village, Hangcheng Avenue, Xixiang Town, Bao'an District, Shenzhen City, Guangdong Province, China. (Zip Code: 518000) Standard(s) ..................... : FCC CFR Title 47 Part 1.1307 Test item description ..... : True Wireless Earphone Trade Mark ...................... : final Model/Type reference..... : FI-EVATW, EVATWREI, EVATWNV, EVATW01, EVWTW02, EVATW06 Rating(s).......................... : Rechargeable Li-ion Battery DC 3.7V Date of receipt of test item ......................................... : Mar. 06, 2022 Date (s) of performance of test ................................... : Mar. 06, 2022 - Apr. 21, 2022 Tested by (+signature) ... : Onnado YE Check by (+signature) .... : Beryl ZHAO Approved by (+signature): Tomsin General disclaimer: This report shall not be reproduced except in full, without the written approval of SHENZHEN TONGCE TESTING LAB. This document may be altered or revised by SHENZHEN TONGCE TESTING LAB personnel only, and shall be noted in the revision section of the document. The test results in the report only apply to the tested sample. Report No.: TCT220406E014 Page 2 of 6 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com Table of Contents 1. General Product Information .................................................................. 3 1.1. EUT description ..................................................................................................... 3 1.2. Model(s) list ............................................................................................................ 3 2. General Information ................................................................................. 4 2.1. Test environment and mode ................................................................................. 4 2.2. Description of Support Units ................................................................................ 4 3. Facilities and Accreditations .................................................................. 5 3.1. Facilities ................................................................................................................. 5 3.2. Location ................................................................................................................. 5 4. Test Results and Measurement Data ..................................................... 6 Report No.: TCT220406E014 Page 3 of 6 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com 1. General Product Information 1.1. EUT description Test item description ........... : True Wireless Earphone Model/Type reference........... : FI-EVATW Sample Number....................: TCT220406E013-0101 Operation Frequency ........... : 2402MHz~2480MHz Modulation Type ................... : GFSK, π/4-DQPSK, 8DPSK Antenna Type ........................ : Chip Antenna Antenna Gain ........................ : 5.22dBi Rating(s)................................ : Rechargeable Li-ion Battery DC 3.7V Note: The antenna gain listed in this report is provided by applicant, and the test laboratory is not responsible for this parameter. 1.2. Model(s) list No. Model No. Tested with 1 FI-EVATW Other models EVATWREI, EVATWNV, EVATW01, EVWTW02, EVATW06 Note: FI-EVATW is tested model, other models are derivative models. The models are identical in circuit and PCB layout, only different on the model names. So the test data of FI-EVATW can represent the remaining models. Report No.: TCT220406E014 Page 4 of 6 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com 2. General Information 2.1. Test environment and mode Item Normal condition Temperature +25ºC Voltage DC 3.7V Humidity 56% Atmospheric Pressure: 1008 mbar Test Mode: Engineering mode: Keep the EUT in continuous transmitting by select channel 2.2. Description of Support Units The EUT has been tested as an independent unit together with other necessary accessories or support units. The following support units or accessories were used to form a representative test configuration during the tests. Equipment Model No. Serial No. FCC ID Trade Name / / / / / Note: 1. All the equipment/cables were placed in the worst-case configuration to maximize the emission during the test. 2. Grounding was established in accordance with the manufacturer’s requirements and conditions for the intended use. 3. For conducted measurements (Output Power, 20dB Occupied Bandwidth, Carrier Frequencies Separation, Hopping Channel Number, Dwell Time, Spurious Emissions), the antenna of EUT is connected to the test equipment via temporary antenna connector, the antenna connector is soldered on the antenna port of EUT, and the temporary antenna connector is listed in the Test Instruments. Report No.: TCT220406E014 Page 5 of 6 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com 3. Facilities and Accreditations 3.1. Facilities The test facility is recognized, certified, or accredited by the following organizations: ● FCC - Registration No.: 645098 SHENZHEN TONGCE TESTING LAB Designation Number: CN1205 The testing lab has been registered and fully described in a report with the (FC…

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Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com TEST REPORT FCC ID. ............................. : 2AX2R-FI-EVATW Test Report No. ............... : TCT220406E013 Date of issue ................... : Apr. 21, 2022 Testing laboratory. .......... : SHENZHEN TONGCE TESTING LAB Testing location/ address: TCT Testing Industrial Park Fuqiao 5th Industrial Zone, Fuhai Street, Bao'an District Shenzhen, Guangdong, 518103, People's Republic of China Applicant's name ............ : final Inc. Address ........................... : 4-44-1, Nakasaiwai-cho, Saiwai-Ku, Kawasaki-shi, Kanagawa, 212-0012, Japan Manufacturer's name. ..... : SHENZHEN SHI KISB ELECTRONIC CO., LTD. Address ........................... : F4, 5, BlockB, F3, Building A, Shanghe Industrial Park, Nanchang Village, Hangcheng Avenue, Xixiang Town, Bao'an District, Shenzhen City, Guangdong Province, China. (Zip Code: 518000) Standard(s) ...................... : FCC CFR Title 47 Part 15 Subpart C Section 15.247 FCC KDB 558074 D01 15.247 Meas Guidance v05r02 ANSI C63.10:2013 Product Name ................. : True Wireless Earphone Trade Mark ....................... : final Model/Type reference ..... : FI-EVATW, EVATWREI, EVATWNV, EVATW01, EVWTW02, EVATW06 Rating(s) .......................... : Rechargeable Li-ion Battery DC 3.7V Date of receipt of test item .......................................... : Mar. 06, 2022 Date (s) of performance of test ................................... : Mar. 06, 2022 - Apr. 21, 2022 Tested by (+signature) .... : Onnado YE Check by (+signature) .... : Beryl ZHAO Approved by (+signature): Tomsin General disclaimer: This report shall not be reproduced except in full, without the written approval of SHENZHEN TONGCE TESTING LAB. This document may be altered or revised by SHENZHEN TONGCE TESTING LAB personnel only, and shall be noted in the revision section of the document. The test results in the report only apply to the tested sample. Report No.: TCT220406E013 Page 2 of 95 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com Table of Contents 1. General Product Information .................................................................. 3 1.1. EUT description ..................................................................................................... 3 1.2. Model(s) list ............................................................................................................ 3 1.3. Operation Frequency ............................................................................................ 4 2. Test Result Summary .............................................................................. 5 3. General Information ................................................................................. 6 3.1. Test environment and mode ................................................................................. 6 3.2. Description of Support Units ................................................................................ 6 4. Facilities and Accreditations .................................................................. 7 4.1. Facilities ................................................................................................................. 7 4.2. Location ................................................................................................................. 7 4.3. Measurement Uncertainty ..................................................................................... 7 5. Test Results and Measurement Data ..................................................... 8 5.1. Antenna requirement ............................................................................................ 8 5.2. Conducted Emission ............................................................................................. 9 5.3. Conducted Output Power ................................................................................... 13 5.4. 20dB Occupy Bandwidth .................................................................................... 14 5.5. Carrier Frequencies Separation ......................................................................... 15 5.6. Hopping Channel Number .................................................................................. 16 5.7. Dwell Time ............................................................................................................ 17 5.8. Pseudorandom Frequency Hopping Sequence ................................................ 18 5.9. Conducted Band Edge Measurement ................................................................ 19 5.10.Conducted Spurious Emission Measurement .................................................. 20 5.11.Radiated Spurious Emission Measurement ..................................................... 21 Appendix A: Test Result of Conducted Test Appendix B: Photographs of Test Setup Appendix C: Photographs of EUT Report No.: TCT220406E013 Page 3 of 95 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com 1. General Product Information 1.1. EUT description Product Name ....................... : True Wireless Earphone Model/Type reference........... : FI-EVATW Sample Number....................: TCT220406E013-0101 Bluetooth Version ................ : V5.0 Operation Frequency ........... : 2402MHz~2480MHz Transfer Rate ........................ : 1/2/3 Mbits/s Number of Channel .............. : 79 Modulation Type ................... : GFSK, π/4-DQPSK, 8DPSK Modulation Technology ....... : FHSS Antenna Type ........................ : Chip Antenna Antenna Gain ........................ : 5.22dBi Rating(s)................................ : Rechargeable Li-ion Battery DC 3.7V Note: The antenna gain listed in this report is provided by applicant, and the test laboratory is not responsible for this parameter. 1.2. Model(s) list No. Model No. Tested with 1 FI-EVATW Other models EVATWREI, EVATWNV, EVATW01, EVWTW02, EVA…

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Report No.: TCT220406E013 Page 61 of 95 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com Band Edge NVNT 1-DH1 2480MHz No-Hopping Ref Band Edge NVNT 1-DH1 2480MHz No-Hopping Emission Report No.: TCT220406E013 Page 62 of 95 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com Band Edge NVNT 2-DH1 2402MHz No-Hopping Ref Band Edge NVNT 2-DH1 2402MHz No-Hopping Emission Report No.: TCT220406E013 Page 63 of 95 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com Band Edge NVNT 2-DH1 2480MHz No-Hopping Ref Band Edge NVNT 2-DH1 2480MHz No-Hopping Emission Report No.: TCT220406E013 Page 64 of 95 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com Band Edge NVNT 3-DH1 2402MHz No-Hopping Ref Band Edge NVNT 3-DH1 2402MHz No-Hopping Emission Report No.: TCT220406E013 Page 65 of 95 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com Band Edge NVNT 3-DH1 2480MHz No-Hopping Ref Band Edge NVNT 3-DH1 2480MHz No-Hopping Emission Report No.: TCT220406E013 Page 66 of 95 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com Band Edge(Hopping) Condition Mode Frequency (MHz) Hopping Mode Max Value (dBc) Limit (dBc) Verdict NVNT 1-DH1 2402 Hopping -48.12 -20 Pass NVNT 1-DH1 2480 Hopping -42.07 -20 Pass NVNT 2-DH1 2402 Hopping -47.91 -20 Pass NVNT 2-DH1 2480 Hopping -41.82 -20 Pass NVNT 3-DH1 2402 Hopping -46.37 -20 Pass NVNT 3-DH1 2480 Hopping -42.57 -20 Pass Report No.: TCT220406E013 Page 67 of 95 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com Test Graphs Band Edge(Hopping) NVNT 1-DH1 2402MHz Hopping Ref Band Edge(Hopping) NVNT 1-DH1 2402MHz Hopping Emission Report No.: TCT220406E013 Page 68 of 95 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com Band Edge(Hopping) NVNT 1-DH1 2480MHz Hopping Ref Band Edge(Hopping) NVNT 1-DH1 2480MHz Hopping Emission Report No.: TCT220406E013 Page 69 of 95 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com Band Edge(Hopping) NVNT 2-DH1 2402MHz Hopping Ref Band Edge(Hopping) NVNT 2-DH1 2402MHz Hopping Emission Report No.: TCT220406E013 Page 70 of 95 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com Band Edge(Hopping) NVNT 2-DH1 2480MHz Hopping Ref Band Edge(Hopping) NVNT 2-DH1 2480MHz Hopping Emission Report No.: TCT220406E013 Page 71 of 95 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com Band Edge(Hopping) NVNT 3-DH1 2402MHz Hopping Ref Band Edge(Hopping) NVNT 3-DH1 2402MHz Hopping Emission Report No.: TCT220406E013 Page 72 of 95 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com Band Edge(Hopping) NVNT 3-DH1 2480MHz Hopping Ref Band Edge(Hopping) NVNT 3-DH1 2480MHz Hopping Emission Report No.: TCT220406E013 Page 73 of 95 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com Conducted RF Spurious Emission Condition Mode Frequency (MHz) Max Value (dBc) Limit (dBc) Verdict NVNT 1-DH1 2402 -36.80 -20 Pass NVNT 1-DH1 2441 -33.49 -20 Pass NVNT 1-DH1 2480 -30.29 -20 Pass NVNT 2-DH1 2402 -36.81 -20 Pass NVNT 2-DH1 2441 -33.76 -20 Pass NVNT 2-DH1 2480 -30.71 -20 Pass NVNT 3-DH1 2402 -37.07 -20 Pass NVNT 3-DH1 2441 -34.00 -20 Pass NVNT 3-DH1 2480 -30.73 -20 Pass Report No.: TCT220406E013 Page 74 of 95 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com Test Graphs Tx. Spurious NVNT 1-DH1 2402MHz Ref Tx. Spurious NVNT 1-DH1 2402MHz Emission Report No.: TCT220406E013 Page 75 of 95 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com Tx. Spurious NVNT 1-DH1 2441MHz Ref Tx. Spurious NVNT 1-DH1 2441MHz Emission Report No.: TCT220406E013 Page 76 of 95 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com Tx. Spurious NVNT 1-DH1 2480MHz Ref Tx. Spurious NVNT 1-DH1 2480MHz Emission Report No.: TCT220406E013 Page 77 of 95 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com Tx. Spurious NVNT 2-DH1 2402MHz Ref Tx. Spurious NVNT 2-DH1 2402MHz Emission Report No.: TCT220406E013 Page 78 of 95 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com Tx. Spurious NVNT 2-DH1 2441MHz Ref Tx. Spurious NVNT 2-DH1 2441MHz Emission Report No.: TCT220406E013 Page 79 of 95 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com Tx. Spurious NVNT 2-DH1 2480MHz Ref Tx. Spurious NVNT 2-DH1 2480MHz Emission Report No.: TCT220406E013 Page 80 of 95 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com Tx. Spurious NVNT 3-DH1 2402MHz Ref Tx. Spurious NVNT 3-DH1 2402MHz Emission Report No.: TCT220406E013 Page 81 of 95 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com Tx. Spurious NVNT 3-DH1 2441MHz Ref Tx. Spurious NVNT 3-DH1 2441MHz Emission Report No.: TCT220406E013 Page 82 of 95 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com Tx. Spurious NVNT 3-DH1 2480MHz Ref Tx. Spurious NVNT 3-DH1 2480MHz Emission Report No.: TCT220406E013 Page 83 of 95 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com Appendix B: Photographs of Test Setup Product: True Wireless Earphone Model: FI-EVATW Radiated Emission Report No.: TCT220406E013 Page 84 of 95 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com Conducted Emission Report No.: TCT220406E013 Page 85 of 95 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com Appendix C: Photographs of EUT Product: True Wireless Earphone Model: FI-EVATW External Photos Report No.: TCT220406E013 Page 86 of 95 Hotline: 400-6611-140 Tel: 86-…

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Page 1 of 2 Appendix B: Photographs of Test Setup Product: True Wireless Earphone Model: FI-EVATW Radiated Emission Page 2 of 2 Conducted Emission