2A9B6TE-BD21J-LTDTrue Wireless Earphone

True Wireless Earphone Model：TE-BD21j-ltd User manual Packing list： 1. True Wireless Earphone+Charging case x1 2. Earpiece x3 3. Foam Earpiece x3 4. User manualx1 5. Register cardx1 5.Pouchx1 6.Type-C cable 7.Silicon strip x1 Product Charging case True Wireless Earphone TrueWirelessEarphoneoperation: Pairingname: AVIOTTE-BD21j-ltd Charging case operation: FCC ID:2A9B6TE-BD21J-LTD

Preseed Japan Corporation Agent Authorization Company: Preseed Japan Corporation Address: 3F Kita-sando DT Bldg., 4-16-7 Sendagaya, Shibuya Ku, Tokyo, 151-0051, Japan Product Name: True Wireless Earphone Model Number(s): TE-BD21j-ltd Product Description: True Wireless Earphone 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: 2022-12-20 Name: Takuya Sugawara Company: Preseed Japan Corporation

PreseedJapanCorporation OfficeofEngineeringTechnology FederalCommunicationsCommission 7435OaklandMillsRoad Columbia,MD21046 USA Date: 2022-12-13 Subject;RequestforConfidentiality FCCID:2A9B6TE-BD21J-LTD ToWhomItMayConcern, PursuanttotheprovisionsoftheCommission’srulesTitle47Sections§0.457and§0.459,we arerequestingtheCommissiontowithholdthefollowingattachment(s)asconfidential documentsfrompublicdisclosureindefinitely. Thesedocumentscontaindetailedsystemandequipmentdescriptionsandareconsideredas proprietaryinformationinoperationoftheequipment.Thepublicdisclosureofthesedocuments mightbeharmfultoourcompanyandwouldgivecompetitorsanunfairadvantageinthemarket. SchematicDiagram BlockDiagram PartsList OperationalDescription Tune-upProcedure Inadditionaltoabovementioneddocuments,inordertocomplywiththemarketingregulations inTitle47CFR§2.803andtheimportationrulesinTitle47CFR§2.1204,whileensuringthat businesssensitiveinformationremainsconfidentialuntiltheactualmarketingofnewly authorizeddevices,werequestShortTermConfidentialityofthefollowingattachment(s); ExternalPhotos TestSetupPhotos InternalPhotos UserManual For45days,pursuanttoPublicNoticeDA04-1705. OR For180dayspursuanttoKDB726920D01. Itisourunderstandingthatallmeasurementtestreports,FCCIDlabelformatand correspondenceduringthecertificationreviewprocesscannotbegrantedasconfidential documentsandthisinformationwillbeavailableforpublicreviewoncethegrantofequipment authorizationisissued. Sincerely PreseedJapanCorporation Contactperson:TakuyaSugawara

Report No.: AGC12877221106AP03 Page 1 of 6 EXTERNAL PHOTOS Left Ear. TOP VIEW OF EUT BOTTOM VIEW OF EUT Report No.: AGC12877221106AP03 Page 2 of 6 FRONT VIEW OF EUT BACK VIEW OF EUT LEFT VIEW OF EUT Report No.: AGC12877221106AP03 Page 3 of 6 RIGHT VIEW OF EUT Report No.: AGC12877221106AP03 Page 4 of 6 Right Ear. TOP VIEW OF EUT BOTTOM VIEW OF EUT Report No.: AGC12877221106AP03 Page 5 of 6 FRONT VIEW OF EUT BACK VIEW OF EUT Report No.: AGC12877221106AP03 Page 6 of 6 LEFT VIEW OF EUT RIGHT VIEW OF EUT ****************************************End of Report****************************************

FCC ID Label Location The product does not have enough space to place the label, and FCC ID label is reflected in the user manual and package, as below:

Report No.: AGC12877221106AP03 Page 1 of 8 INTERNAL PHOTOS Left Ear. OPEN VIEW OF EUT-1 OPEN VIEW OF EUT-2 Report No.: AGC12877221106AP03 Page 2 of 8 OPEN VIEW OF EUT-3 VIEW OF BATTERY BT Antenna Report No.: AGC12877221106AP03 Page 3 of 8 INTERNAL VIEW OF EUT-1 INTERNAL VIEW OF EUT-2 Report No.: AGC12877221106AP03 Page 4 of 8 INTERNAL VIEW OF EUT-3 INTERNAL VIEW OF EUT-4 Report No.: AGC12877221106AP03 Page 5 of 8 Right Ear. OPEN VIEW OF EUT-1 OPEN VIEW OF EUT-2 Report No.: AGC12877221106AP03 Page 6 of 8 OPEN VIEW OF EUT-3 VIEW OF BATTERY BT Antenna Report No.: AGC12877221106AP03 Page 7 of 8 INTERNAL VIEW OF EUT-1 INTERNAL VIEW OF EUT-2 Report No.: AGC12877221106AP03 Page 8 of 8 INTERNAL VIEW OF EUT-3 INTERNAL VIEW OF EUT-4 ****************************************End of Report****************************************

RF EXPOSURE EVALUATION 1. PRODUCT INFORMATION Product Description True Wireless Earphone Model Name TE-BD21j-ltd FCC ID 2A9B6TE-BD21J-LTD 2. EVALUATION METHOD According to 447498 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 3. CALCULATION BR&EDR: P t =1.428dBm=1.389mW The value of the Maximum output power P t is referred to the test report of the CFR47 §15.247. The result for RF exposure evaluation SAR=(1.389mW / 5mm).[√2.402GHz)]=0.431<3.0 for 1-g SAR and ≤ 7.5 for 10-g extremity SAR. BLE: P t =0.854dBm=1.217mW The value of the Maximum output power P t is referred to the test report of the CFR47 §15.247. The result for RF exposure evaluation SAR=(1.217mW / 5mm).[√2.402GHz)]=0.377<3.0 for 1-g SAR and ≤ 7.5 for 10-g extremity SAR. CONCLUSION The SAR evaluation is not required.

Page 1 of 80 FCC Test Report Report No.: AGC12877221106FE03 FCC ID : 2A9B6TE-BD21J-LTD APPLICATION PURPOSE : Original Equipment PRODUCT DESIGNATION : True Wireless Earphone BRAND NAME : AVIOT MODEL NAME : TE-BD21j-ltd APPLICANT : Preseed Japan Corporation DATE OF ISSUE : Dec. 09, 2022 STANDARD(S) : FCC Part 15.247 REPORT VERSION : V1.0 Attestation of Global Compliance (Shenzhen) Co., Ltd Report No.: AGC12877221106FE03 Page 2 of 68 REPORT REVISE RECORD Report Version Revise Time Issued Date Valid Version Notes V1.0 / Dec. 09, 2022 Valid Initial Release Report No.: AGC12877221106FE03 Page 3 of 68 TABLE OF CONTENTS 1. VERIFICATION OF CONFORMITY .................................................................................................................. 5 2. GENERAL INFORMATION .............................................................................................................................. 6 2.1. PRODUCT DESCRIPTION ........................................................................................................................ 6 2.2. TABLE OF CARRIER FREQUENCYS ....................................................................................................... 6 2.3. RECEIVER INPUT BANDWIDTH .............................................................................................................. 7 2.4. EXAMPLE OF A HOPPING SEQUENCY IN DATA MODE ......................................................................... 7 2.5. EQUALLY AVERAGE USE OF FREQUENCIES AND BEHAVIOUR ......................................................... 7 2.6. RELATED SUBMITTAL(S) / GRANT (S) .................................................................................................... 8 2.7. TEST METHODOLOGY ............................................................................................................................. 8 2.8. SPECIAL ACCESSORIES ......................................................................................................................... 8 2.9. EQUIPMENT MODIFICATIONS ................................................................................................................. 8 2.10. ANTENNA REQUIREMENT..................................................................................................................... 8 3. MEASUREMENT UNCERTAINTY ................................................................................................................... 9 4. DESCRIPTION OF TEST MODES ................................................................................................................. 10 5. SYSTEM TEST CONFIGURATION ................................................................................................................ 11 5.1. CONFIGURATION OF EUT SYSTEM ...................................................................................................... 11 5.2. EQUIPMENT USED IN TESTED SYSTEM .............................................................................................. 11 5.3. SUMMARY OF TEST RESULTS .............................................................................................................. 11 6. TEST FACILITY .............................................................................................................................................. 12 7. PEAK OUTPUT POWER ................................................................................................................................ 13 7.1. MEASUREMENT PROCEDURE ............................................................................................................. 13 7.2. TEST SET-UP (BLOCK DIAGRAM OF CONFIGURATION) .................................................................... 13 7.3. LIMITS AND MEASUREMENT RESULT .................................................................................................. 14 8. 20DB BANDWIDTH ........................................................................................................................................ 19 8.1. MEASUREMENT PROCEDURE ............................................................................................................. 19 8.2. TEST SET-UP (BLOCK DIAGRAM OF CONFIGURATION) .................................................................... 19 8.3. LIMITS AND MEASUREMENT RESULTS ............................................................................................... 20 9. CONDUCTED SPURIOUS EMISSION........................................................................................................... 25 9.1. MEASUREMENT PROCEDURE ............................................................................................................. 25 9.2. TEST SET-UP (BLOCK DIAGRAM OF CONFIGURATION) .................................................................... 25 9.3. MEASUREMENT EQUIPMENT USED .................................................................................................... 25 9.4. LIMITS AND MEASUREMENT RESULT .................................................................................................. 25 10. RADIATED EMISSION ................................................................................................................................. 46 10.1. MEASUREMENT PROCEDURE ........................................................................................................... 46 10.2. TEST SETUP ......................................................................................................................................... 48 Report No.: AGC12877221106FE03 Page 4 of 68 10.3. LIMITS AND MEASUREMENT RESULT ............................................................................................... 49 10.4. TEST RESULT........................................................................................................................................ 49 11. NUMBER OF HOPPING FREQUENCY ................................................................…

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Report No.: AGC12877221106FE03 Page 63 of 68 Test_Graph_BR_HOP_ANT1_NA_1Mbps_2441_Number of Busrt Test_Graph_BR_HOP_ANT1_NA_1Mbps_2441_Time per Burst Report No.: AGC12877221106FE03 Page 64 of 68 Test_Graph_BR_HOP_ANT1_NA_1Mbps_2480_Number of Busrt Test_Graph_BR_HOP_ANT1_NA_1Mbps_2480_Time per Burst Report No.: AGC12877221106FE03 Page 65 of 68 13. FREQUENCY SEPARATION 13.1. MEASUREMENT PROCEDURE The EUT shall have its hopping function enabled. Use the following spectrum analyzer settings: 1. Span: Wide enough to capture the peaks of two adjacent channels. 2. RBW: Start with the RBW set to approximately 30% of the channel spacing; adjust as necessary to best identify the center of each individual channel. 3. Video (or average) bandwidth (VBW) ≥ RBW. 4. Sweep: Auto. e) Detector function: Peak. f) Trace: Max hold. g) Allow the trace to stabilize. Use the marker-delta function to determine the separation between the peaks of the adjacent channels. 13.2. TEST SETUP (BLOCK DIAGRAM OF CONFIGURATION) Same as described in section 6.2 13.3. MEASUREMENT EQUIPMENT USED The same as described in section 6.3 13.4. LIMITS AND MEASUREMENT RESULT Test Data of Frequency Separation Test Mode Channel Separation (MHz) Limits Pass or Fail GFSK Hopping 0.937 >= 2/3 -20dB BW Pass Test Graphs of Number of Hopping Frequency Test_Graph_BR_HOP_ANT1_NA_1Mbps_Hopping Separation Note: The GFSK modulation is the worst case and recorded in the report. Report No.: AGC12877221106FE03 Page 66 of 68 14. LINE CONDUCTED EMISSION TEST 14.1. LIMITS OF LINE CONDUCTED EMISSION TEST Frequency Maximum RF Line Voltage Q.P. (dBμV) Average (dBμV) 150kHz~500kHz 66-56 56-46 500kHz~5MHz 56 46 5MHz~30MHz 60 50 Note: 1. The lower limit shall apply at the transition frequency. 2. The limit decreases linearly with the logarithm of the frequency in the range 0.15 MHz to 0.50 MHz. 14.2. BLOCK DIAGRAM OF LINE CONDUCTED EMISSION TEST EUT & Support Units Report No.: AGC12877221106FE03 Page 67 of 68 14.3. PRELIMINARY PROCEDURE OF LINE CONDUCTED EMISSION TEST 1. The equipment was set up as per the test configuration to simulate typical actual usage per the user’s manual. When the EUT is a tabletop system, a wooden table with a height of 0.8 meters is used and is placed on the ground plane as per ANSI C63.10 (see Test Facility for the dimensions of the ground plane used). When the EUT is a floor-standing equipment, it is placed on the ground plane which has a 3-12 mm non-conductive covering to insulate the EUT from the ground plane. 2. Support equipment, if needed, was placed as per ANSI C63.10. 3. All I/O cables were positioned to simulate typical actual usage as per ANSI C63.10. 4. All support equipment received AC120V/60Hz power from a LISN, if any. 5. The EUT received DC 5V power from adapter which received AC120V/60Hz power from a LISN. 6. The test program was started. Emissions were measured on each current carrying line of the EUT using a spectrum Analyzer / Receiver connected to the LISN powering the EUT. The LISN has two monitoring points: Line 1 (Hot Side) and Line 2 (Neutral Side). Two scans were taken: one with Line 1 connected to Analyzer / Receiver and Line 2 connected to a 50 ohm load; the second scan had Line 1 connected to a 50 ohm load and Line 2 connected to the Analyzer / Receiver. 7. Analyzer / Receiver scanned from 150 kHz to 30MHz for emissions in each of the test modes. 8. During the above scans, the emissions were maximized by cable manipulation. 9. The test mode(s) were scanned during the preliminary test. Then, the EUT configuration and cable configuration of the above highest emission level were recorded for reference of final testing. 14.4. FINAL PROCEDURE OF LINE CONDUCTED EMISSION TEST 1. EUT and support equipment was set up on the test bench as per step 2 of the preliminary test. 2. A scan was taken on both power lines, Line 1 and Line 2, recording at least the six highest emissions. Emission frequency and amplitude were recorded into a computer in which correction factors were used to calculate the emission level and compare reading to the applicable limit. If EUT emission level was less – 2dB to the A.V. limit in Peak mode, then the emission signal was re-checked using Q.P and Average detector. 3. The test data of the worst case condition(s) was reported on the Summary Data page. 14.5. TEST RESULT OF LINE CONDUCTED EMISSION TEST N/A Note: The BT function cannot transmit when charging. Report No.: AGC12877221106FE03 Page 68 of 68 APPENDIX A: PHOTOGRAPHS OF TEST SETUP Refer to the Report No.: AGC12877221106AP02 APPENDIX B: PHOTOGRAPHS OF EUT Refer to the Report No.: AGC12877221106AP03 ----END OF REPORT---- Conditions of Issuance of Test Reports 1. All samples and goods are accepted by the Attestation of Global Compliance (Shenzhen) Co., Ltd. (the “Company”) solely for testing and reporting in accordance with the following terms and conditions. The company provides its services on the basis that such terms and conditions constitute express agreement between the company and any person, firm or company requesting its services (the “Clients”). 2. Any report issued by Company as a result of this application for testing services (the “Report”) shall be issued in confidence to the Clients and the Report will be strictly treated as such by the Company. It may not be reproduced either in its entirety or in part and it may not be used for advertising or other unauthorized purposes without the written consent of the Company. The Clients to whom the Report is issued may, however, show or send it, or a certified copy thereof prepared by the Company to its customer, supplier or other persons directly concerned. The Company will not, without the consent of the Clients, enter into any discussion or correspondence with any third party concerning the contents of the Report, unless required by the relevant governmental authorities, laws or court orders. 3.The Company shall not be called or be liable to be called to give evidence or testim…

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深圳市宇鸿实业有限公司 Shenzhen Yuhong Industrial Co., Ltd Shenzhen Yuhong Industrial Co., Ltd R & D center: 1802, block C, Zhantao science and technology building, intersection of Minzhi Avenue and Gongye West Road, Longhua New District, Shenzhen 电话：0755-21031946 mailbox：[email protected] 第 1 页 承 认 书 SPECIFICATION FOR APPROVAL 客 户 名 称 CUST OMER： Shenzhen kaishibo Electronic Co., Ltd 客 户 料 号 CUS PART NO: H16E 品 名 规 格 PART NAME: FPC Bluetooth antenna 宇 鸿 料 号 TPT PART NO: 版 本edition： V3.0 客户签章Customer signature： 日期date： 年 月 日 采购部Purchasing Department 工程部engineering Ministry 批准approval 宇鸿实业Yuhong industry： 日期date：2021 年 08 月 26 日 Structure Department 工程部engineering Ministry 批准approval Cindy long tony 深圳市宇鸿实业有限公司 Shenzhen Yuhong Industrial Co., Ltd 备注：承认签章后请回复一份（或复印件）给我司，其余由贵公司留作存档。如果在签章的承认书（或复印 件）回复给我司之前，下了有关此规格产品的订单且又无特别说明，那么我司就确定贵司已完全承认了。 Please return one specification or one copy of it with your chop and signature of approval and retain the others for your record. In the event of an order being placed for this part number before the chop and signed with specification (or copy) is returned and without special explanation, it will be assumed that full approval have been given. 第 1 页 深圳市宇鸿实业有限公司 Shenzhen Yuhong Industrial Co., Ltd Shenzhen Yuhong Industrial Co., Ltd R & D center: 1802, block C, Zhantao science and technology building, intersection of Minzhi Avenue and Gongye West Road, Longhua New District, Shenzhen 电话：0755-21031946 mailbox：[email protected] 第 2 页 目录catalog 封 面 Cover................................................................................. 1 目 录 catalog............................................................................... 2 一、成品图片Finished product picture .................................................... 3 二、产品参数 Product parameters........................................................ 3 三、天线测试环境Antenna test environment ............................................. 4 四、天线匹配Antenna matching.................... ......................................... 5 五、数据data..............................................................................................6-7 六、产品结构图Product structure diagram ............................................ 8 七、环境，盐雾试验报告Environment, salt spray test report .......... 9-13 1、环境试验environmental test .........................................................9-11 2、盐雾试验Salt spray test ...........................................................12-13 八、材料成分及有害物质表List of material composition and harmful substances.............................14 九、模具样检测报告Mould sample test report.....................................15 深圳市宇鸿实业有限公司 Shenzhen Yuhong Industrial Co., Ltd Shenzhen Yuhong Industrial Co., Ltd R & D center: 1802, block C, Zhantao science and technology building, intersection of Minzhi Avenue and Gongye West Road, Longhua New District, Shenzhen 电话：0755-21031946 mailbox：[email protected] 第 3 页 天线规格书 Antenna specifications 一、 成品图片（仅供参考） Finished product picture (for reference only) 二、 产品参数 Product parameters 产品名称Name H16E 型号Model Type H16E 频率范围FrenquencyRange 2400～2480 MHz 驻波比VSWR 2400～2480MHz ≤1.5 增益Gain 0.81 dbi 辐射方向Radiation 全向 极 化 方 式Polarization 垂直/水平Vertical / horizontal 修订记录Revision record 版本号 Version number 更改内容 Change content 生效年月 Effective date V1.0 初始版本Initial version 2021-08-26 深圳市宇鸿实业有限公司 Shenzhen Yuhong Industrial Co., Ltd Shenzhen Yuhong Industrial Co., Ltd R & D center: 1802, block C, Zhantao science and technology building, intersection of Minzhi Avenue and Gongye West Road, Longhua New District, Shenzhen 电话：0755-21031946 mailbox：[email protected] 第 4 页 三、天线测试环境 Antenna test environment 测试系统Test system:/SY-24M天线测量系统antenna measurement system 测试环境testing environment：温度temperature23°C±2°C，湿度humidity50%±15% 测试设备Test equipment：Agilent 5071B Agilent CMW500 综测仪 SG24-L(4m*4m*4m) 网络综测仪Network integrated measuring instrument（CMW500） 网络分析仪network analyzer (5071B) OTA测试头模Test head mold 深圳市宇鸿实业有限公司 Shenzhen Yuhong Industrial Co., Ltd Shenzhen Yuhong Industrial Co., Ltd R & D center: 1802, block C, Zhantao science and technology building, intersection of Minzhi Avenue and Gongye West Road, Longhua New District, Shenzhen 电话：0755-21031946 mailbox：[email protected] 第 5 页 四、 天线匹配 Antenna matching 匹配参数示意图：Matching diagram: 匹配说明 Match description MINA ANT E1 N/C E2 5PF E3 1.2PF E4 R/L 深圳市宇鸿实业有限公司 Shenzhen Yuhong Industrial Co., Ltd Shenzhen Yuhong Industrial Co., Ltd R & D center: 1802, block C, Zhantao science and technology building, intersection of Minzhi Avenue and Gongye West Road, Longhua New District, Shenzhen 电话：0755-21031946 mailbox：[email protected] 第 6 页 五、天线数据 Antenna data 5.1 无源 Passive 5.2 无源数据（效率&增益） Passive data gain 深圳市宇鸿实业有限公司 Shenzhen Yuhong Industrial Co., Ltd Shenzhen Yuhong Industrial Co., Ltd R & D center: 1802, block C, Zhantao science and technology building, intersection of Minzhi Avenue and Gongye West Road, Longhua New District, Shenzhen 电话：0755-21031946 mailbox：[email protected] 第 7 页 5.3效率场型图Efficiency field pattern 深圳市宇鸿实业有限公司 Shenzhen Yuhong Industrial Co., Ltd Shenzhen Yuhong Industrial Co., Ltd R & D center: 1802, block C, Zhantao science and technology building, intersection of Minzhi Avenue and Gongye West Road, Longhua New District, Shenzhen 电话：0755-21031946 mailbox：[email protected] 第 8 页 六、结构图 Structure diagram Shenzhen Yuhong Industrial Co., Ltd Electrical wiring copper base material Gold Plated 1U White print 深圳市宇鸿实业有限公司 Shenzhen Yuhong Industrial Co., Ltd Shenzhen Yuhong Industrial Co., Ltd R & D center: 1802, block C, Zhantao science and technology building, intersection of Minzhi Avenue and Gongye West Road, Longhua New District, Shenzhen 电话：0755-21031946 mailbox：[email protected] 第 9 页 七、环境，盐雾试验报告Environment, salt spray test report 1、环境试验 environmental test 参数属性 Parameter attribute 参数名称 Parameter name 要求值 Required value 厂家规格值 Manufacturer specification value 产品典型值 Typical value of product 可 靠 性 reliability 盐雾 Salt fog ≧24hours (35°C,5%,PH6.5~7.2)， 测试后无明显外观不 良。There was …

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Report No.: AGC12877221106AP02 Page 1 of 2 TEST SETUP PHOTOS RADIATED EMISSION TEST SETUP BELOW 1GHz RADIATED EMISSION TEST SETUP ABOVE 1GHz Report No.: AGC12877221106AP02 Page 2 of 2 RF CONDUCTED TEST SETUP ****************************************End of Report*************************************