DMOCX400TW1LCX True Wireless (CX400TW1)

1 LMSXS 2 3 4 3s L R “Pairing“ Smart Control CX 400BT TW ********* ************ USB-A USB-C Wear Insert the earbuds with a slight twist. Try a different adapter for the perfect fit. Tragen Setzen Sie die Ohrhörer mit einer leichten Drehung in die Ohren ein. Probieren Sie einen anderen Adapter für den optimalen Sitz der Ohrhörer aus. 佩戴 轻轻插入耳机。尝试不同的耳垫以便佩戴 舒适。 Pair Touch and hold both earbuds for 3 seconds to start Bluetooth® pairing. Koppeln Berühren und halten Sie beide Ohrhörer für 3 Sekunden, um die Bluetooth®-Kopplung zu starten. 配对 触摸并按住两个耳机3秒钟即可启动蓝牙® 配对。 Connect Open the Bluetooth settings and search for "CX 400BT TW". Verbinden Öffnen Sie die Bluetooth-Einstellungen und suchen Sie nach „CX 400BT TW“. 连接 打开蓝牙置并搜索 "CX 400BT TW"。 Download the app Fine-tune your listening experience and update the earbuds using the app. App herunterladen Passen Sie Ihr Hörerlebnis an und aktualisieren Sie die Ohrhörer mit der App. 下载App 微调您的聆听体验并使用该应用程序更新耳机。 Waking up and charging Place the earbuds into the charging case and connect the power supply. “Sennheiser Smart Control” Sennheiser electronic GmbH & Co. KG, Am Labor 1, 30900 Wedemark, Germany www.sennheiser.com, Publ. 09/20, 588560/A01 Aufwecken und laden Setzen Sie die Ohrhörer in die Ladebox und schließen Sie die Stromquelle an. 唤醒与加载 将耳机放入充电保护盒中并连接电源。 Paper grammage: 120 gsm Guide delivery: Folded Print colours: CMYK (4C)Paper quality: Art glossy varnish Open size: 545 x 79 mmClose size: 109 x 79 mm Release date: 18. June 2020 A01 MP Print specs: ai159246280625_CX400BTTW_QG_primary_588560_0920_PRT.pdf 1 18.06.2020 08:46:47 LRL/R 6 7 Charge status Place the earbuds into the charging case. Press the button to view the battery charge status. Lade-Status Setzen Sie die Ohrhörer in die Ladebox. Drücken Sie die Taste, um den Akku- Ladestand anzuzeigen. 充电状态 将耳机放入充电保护盒中。 按下按钮查看电池的充电状态。 Touch control | Touch-Bedienfläche | 触摸控制Phone calls | Telefonanrufe | 来电 1x Play/Pause | Wiedergabe/Pause | 播放/暂停 2x Next | Nächster Titel | 下一个 Previous | Vorheriger Titel | 上一首 Hold Volume – | Lautstärke – | 音量 - Smart Control app Adapting the control functions | Steuerung ändern | 更改控制 Instruction manuals and product support | Bedienungsanleitungen und Produktbetreuung | 操作说明与产品支持 Welcome Willkommen | 欢迎 1x 2x 1x 2x Hold Volume + | Lautstärke + | 音量 + CX 400BT True Wireless Voice assistant | Sprachassistent | 语音助手 Accept/end call Anruf annehmen/beenden 接听/结束通话 Reject call Anruf ablehnen 拒绝接听 Model: CX400TW1, CX400TW1 R, CX400TW1 L, CX400TW1 C Quick Guide | Kurzanleitung | 快速指南 ? www.sennheiser.com/download ai159246280625_CX400BTTW_QG_primary_588560_0920_PRT.pdf 2 18.06.2020 08:46:47

Sennheiser electronic GmbH & Co. KG Am Labor 1 30900 Wedemark, Germany T +49 5130 600 - 0 F +49 5130 600 – 1300 Sitz 30900 Wedemark, Amtsgericht Hannover HRA 120100 phG: Sennheiser Beteiligungs-GmbH Sitz 30900 Wedemark, Amtsgericht Hannover HRB 120179 Confidenti ality Request Date: July 29, 2020 Model No.: CX400TW1 L FCC ID: DMOCX400TW1L Attention To: Federal Communications Commission Authorization and Evaluation Division Pursu ant to Secti ons 0.457 and 0.459 of the Commission’s Rules, the Applicant hereby requests confidential treatment of information accompanying this Application as outlined below: • Schematics • Block Diagram • Operation Description The above materials contain trade se crets and proprietary information not cust omarily released to the public. The public disclosure of these matters might be harmful to the Applicant and provide unjustified benefits to its competitors. The Applicant underst ands that pursu ant to Rule 0.457, disclosu re of this Application and all accompanying documentation will not be made before the date of the Grant for this application. For and on behalf of Sennheiser electronic GmbH & Co.KG Sincerely, ________________________________ Anitha Shankari N.S Senior Compliance Manager – APAC Region Tel: +65-69325978 [email protected]

Sennheiser electronic GmbH & Co. KG Am Labor 1 30900 Wedemark, Germany T +49 5130 600 - 0 F +49 5130 600 – 1300 Sitz 30900 Wedemark, Amtsgericht Hannover HRA 120100 phG: Sennheiser Beteiligungs-GmbH Sitz 30900 Wedemark, Amtsgericht Hannover HRB 120179 SHORT-TERM CONFIDENTIALITY REQUEST Date: July 29, 2020 Model No.: CX400TW1 L FCC ID: DMOCX400TW1L Attention To: Federal Communications Commission Authorization and Evaluation Division Pursuant to Paragraphs §0.457 and 0.459 of the Commission's Rules (47 C.F.R.) and Section §552(b)(4) of the Freedom of Information Act, we requests short term confidentiality for the following documents: 1. External and Internal Photographs 2. Test Setup Photos 3. User Manual We request this confidentiality on the basis of ensuring that business sensitive information remains confidential until the actual marketing of our new device, which is planned for 1 September 2020. If you have any questions, please feel free to contact the undersigned. For and on behalf of Sennheiser electronic GmbH & Co.KG Sincerely, ________________________________ Anitha Shankari N.S Senior Compliance Manager – APAC Region Tel: +65-69325978 [email protected]

Sennheiser electronic GmbH & Co. KG Am Labor 1 30900 Wedemark, Germany T +49 5130 600 - 0 F +49 5130 600 – 1300 Sitz 30900 Wedemark, Amtsgericht Hannover HRA 120100 phG: Sennheiser Beteiligungs-GmbH Sitz 30900 Wedemark, Amtsgericht Hannover HRB 120179 Agency Auth oriza tion Letter Date: July 29, 2020 FCC ID: DMOCX400TW1L To whom it may concern: We, the undersigned, hereby authorize Bureau Veritas Consumer Product Services (H.K.) Ltd., Taoyuan Branch of Taiwan to act on our behalf as our agent, related to the FCC approval of our product with the follo wing model number. Model No.: CX400TW1 L in the follo wing matter: report su bmittal, related co rresp ondence , the signing of all documents relating to these matters, and any other lawful acti vity necessary to obtain such ce rtification. Any act ca rri ed out by BV Bureau Veritas Consumer Product Services (H.K.) Ltd., Taoyuan Branch of Taiwan within the sc ope of this authorization shall have the same effects as our own. This authorization is valid for six months from the original date. If you have any questions regarding the authorization, please don’t hesitate to contact us. For and on behalf of Sennheiser electronic GmbH & Co.KG Sincerely, ________________________________ Anitha Shankari N.S Senior Compliance Manager – APAC Region Tel: +65-69325978 [email protected]

Reference No.: 200508C01-1 Page 1 / 22 CONSTRUCTION PHOTOS OF EUT CX True Wireless (CX400TW1) Brand: SENNHEISER, Model: CX400TW1 Left Earbud Brand: SENNHEISER, Model: CX400TW1 L Black color Reference No.: 200508C01-1 Page 2 / 22 Reference No.: 200508C01-1 Page 3 / 22 Reference No.: 200508C01-1 Page 4 / 22 Right Earbud Brand: SENNHEISER, Model: CX400TW1 R Black color Reference No.: 200508C01-1 Page 5 / 22 Reference No.: 200508C01-1 Page 6 / 22 Reference No.: 200508C01-1 Page 7 / 22 Reference No.: 200508C01-1 Page 8 / 22 Charging Case Brand: SENNHEISER, Model: CX400TW1 C Black color Reference No.: 200508C01-1 Page 9 / 22 Reference No.: 200508C01-1 Page 10 / 22 Reference No.: 200508C01-1 Page 11 / 22 Reference No.: 200508C01-1 Page 12 / 22 Charging Case Brand: SENNHEISER, Model: CX400TW1 C White color Reference No.: 200508C01-1 Page 13 / 22 Right Earbud Brand: SENNHEISER, Model: CX400TW1 R White color Reference No.: 200508C01-1 Page 14 / 22 Reference No.: 200508C01-1 Page 15 / 22 Reference No.: 200508C01-1 Page 16 / 22 Left Earbud Brand: SENNHEISER, Model: CX400TW1 L White color Reference No.: 200508C01-1 Page 17 / 22 Reference No.: 200508C01-1 Page 18 / 22 Reference No.: 200508C01-1 Page 19 / 22 Charging Case Brand: SENNHEISER, Model: CX400TW1 C White color Reference No.: 200508C01-1 Page 20 / 22 Reference No.: 200508C01-1 Page 21 / 22 Reference No.: 200508C01-1 Page 22 / 22

Label and location Compliance Sheet within package: Bottom view of package:

Reference No.: 200508C01-2 Page 1 / 17 CONSTRUCTION PHOTOS OF EUT Left Earbud Brand: SENNHEISER, Model: CX400TW1 L Black color Reference No.: 200508C01-2 Page 2 / 17 Reference No.: 200508C01-2 Page 3 / 17 Reference No.: 200508C01-2 Page 4 / 17 Reference No.: 200508C01-2 Page 5 / 17 Reference No.: 200508C01-2 Page 6 / 17 Right Earbud Brand: SENNHEISER, Model: CX400TW1 R Black color Reference No.: 200508C01-2 Page 7 / 17 Reference No.: 200508C01-2 Page 8 / 17 Earbud (main battery cell) Reference No.: 200508C01-2 Page 9 / 17 Reference No.: 200508C01-2 Page 10 / 17 Charging Case Brand: SENNHEISER, Model: CX400TW1 C Black color Reference No.: 200508C01-2 Page 11 / 17 Reference No.: 200508C01-2 Page 12 / 17 Reference No.: 200508C01-2 Page 13 / 17 Charging case (Main battery cell) Reference No.: 200508C01-2 Page 14 / 17 Charging Case Brand: SENNHEISER, Model: CX400TW1 C White color Charging case (alternative battery cell) Reference No.: 200508C01-2 Page 15 / 17 Earbud (alternative battery cell) Reference No.: 200508C01-2 Page 16 / 17 Reference No.: 200508C01-2 Page 17 / 17

FCC SAR Exclusion Report Report Format Version 5.0.0 Page No. : 1 of 9 Report No. : SF200508C01 Issued Date : Jun. 16, 2020 FCC SAR Exclusion Report Report No. : SF200508C01 Applicant : Sennheiser electronic GmbH & Co. KG Address : Am Labor 1, D-30900 Wedemark, Germany Product : CX True Wireless (CX400TW1) Brand : SENNHEISER FCC ID : DMOCX400TW1L Model No. : CX400TW1 L Standards : FCC 47 CFR Part 2 (2.1093), IEEE C95.1:1992, IEEE Std 1528:2013 KDB 865664 D01 v01r04, KDB 865664 D02 v01r02, KDB 447498 D01 v06 Sample Received Date : May 08, 2020 Date of Evaluation : Jun. 09, 2020 Lab Address : No. 47-2, 14th Ling, Chia Pau Vil., Lin Kou Dist., New Taipei City, Taiwan Test Location : No. 19, Hwa Ya 2nd Rd., Wen Hwa Vil., Kwei Shan Dist., Taoyuan City, Taiwan CERTIFICATION: The above equipment have been tested by Bureau Veritas Consumer Products Services (H.K.) Ltd., Taoyuan Branch – Lin Kou Laboratories, and found compliance with the requirement of the above standards. The test record, data evaluation & Equipment Under Test (EUT) configurations represented herein are true and accurate accounts of the measurements of the sample’s SAR characteristics under the conditions specified in this report. It should not be reproduced except in full, without the written approval of our laboratory. The client should not use it to claim product certification, approval, or endorsement by TAF or any government agencies. Prepared By : Shelly Hsueh / Specialist Approved By : Gordon Lin / Manager This report is for your exclusive use. Any copying or replication of this report to or for any other person or entity, or use of our name or trademark, is permitted only with our prior written permission. This report sets forth our findings solely with respect to the test samples identified herein. The results set forth in this report are not indicative or representative of the quality or characteristics of the lot from which a test sample was taken or any similar or identical product unless specifically and expressly noted. Our report includes all of the tests requested by you and the results thereof based upon the information that you provided to us. You have 60 days from date of issuance of this report to notify us of any material error or omission caused by our negligence, provided, however, that such notice shall be in writing and shall specifically address the issue you wish to raise. A failure to raise such issue within the prescribed time shall constitute your unqualified acceptance of the completeness of this report, the tests conducted and the correctness of the report contents. Unless specific mention, the uncertainty of measurement has been explicitly taken into account to declare the compliance or non-compliance to the specification. FCC SAR Exclusion Report Report Format Version 5.0.0 Page No. : 2 of 9 Report No. : SF200508C01 Issued Date : Jun. 16, 2020 Table of Contents Release Control Record ............................................................................................................................................................... 3 1. Summary of Maximum SAR Value ....................................................................................................................................... 4 2. Description of Equipment Under Test ................................................................................................................................. 5 3. SAR Measurement Evaluation .............................................................................................................................................. 6 3.1 Maximum Output Power ............................................................................................................................................... 6 3.1.1 Maximum Target Conducted Power ................................................................................................................... 6 3.1.2 Measured Conducted Power Result ................................................................................................................... 6 3.1.3 Time-Avg. Power calculation. ............................................................................................................................. 7 3.2 SAR Testing Exclusions ............................................................................................................................................... 8 4. Information on the Testing Laboratories ............................................................................................................................. 9 Appendix A. Photographs of EUT and Setup FCC SAR Exclusion Report Report Format Version 5.0.0 Page No. : 3 of 9 Report No. : SF200508C01 Issued Date : Jun. 16, 2020 Release Control Record Issue No. Reason for Change Date Issued SF200508C01 Initial release Jun. 16, 2020 FCC SAR Exclusion Report Report Format Version 5.0.0 Page No. : 4 of 9 Report No. : SF200508C01 Issued Date : Jun. 16, 2020 1. Summary of Maximum SAR Value Equipment Class Mode Highest Reported SAR 1g (W/kg) DSS and DTS Bluetooth Not Required Note: 1. The SAR limit (Head & Body: SAR 1g 1.6 W/kg) for general population / uncontrolled exposure is specified in FCC 47 CFR part 2 (2.1093) and ANSI/IEEE C95.1-1992. FCC SAR Exclusion Report Report Format Version 5.0.0 Page No. : 5 of 9 Report No. : SF200508C01 Issued Date : Jun. 16, 2020 2. Description of Equipment Under Test Product CX True Wireless (CX400TW1) Brand Name SENNHEISER FCC ID DMOCX400TW1L Model Name CX400TW1 L Tx Frequency Bands (Unit: MHz) Bluetooth : 2402 ~ 2480 Uplink Modulations Bluetooth : GFSK, π/4-DQPSK, 8-DPSK Maximum Tune-up Conducted Power (Unit: dBm) Please refer to section 3.1 of this report Antenna Type Monopole antenna EUT Stage Engineering Sample Note: 1. The above EUT information is declared by manufacturer and for more detailed features description please refers to the manufacturer's specifications or User's Manual. FCC SAR Exclusion Report R…

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Report No.: RF200508C01 Page No. 1 / 57 Report Format Version: 6.1.1 FCC Test Report Report No.: RF200508C01 FCC ID: DMOCX400TW1L Test Model: CX400TW1 L Received Date: May 08, 2020 Test Date: May 13 ~ Jun. 30, 2020 Issued Date: Jul. 03, 2020 Applicant: Sennheiser electronic GmbH & Co. KG Address: Am Labor 1, D-30900 Wedemark, Germany Issued By: Bureau Veritas Consumer Products Services (H.K.) Ltd., Taoyuan Branch Lin Kou Laboratories Lab Address: No. 47-2, 14th Ling, Chia Pau Vil., Lin Kou Dist., New Taipei City, Taiwan Test Location: No.19, Hwa Ya 2nd Rd., Wen Hwa Vil., Kwei Shan Dist., Taoyuan City 33383, Taiwan FCC Registration / Designation Number: 788550 / TW0003 This report is for your exclusive use. Any copying or replication of this report to or for any other person or entity, or use of our name or trademark, is permitted only with our prior written permission. This report sets forth our findings solely with respect to the test samples identified herein. The results set forth in this report are not indicative or representative of the quality or characteristics of the lot from which a test sample was taken or any similar or identical product unless specifically and expressly noted. Our report includes all of the tests requested by you and the results thereof based upon the information that you provided to us. You have 60 days from date of issuance of this report to notify us of any material error or omission caused by our negligence, provided, however, that such notice shall be in writing and shall specifically address the issue you wish to raise. A failure to raise such issue within the prescribed time shall constitute your unqualified acceptance of the completeness of this report, the tests conducted and the correctness of the report contents. Unless specific mention, the uncertainty of measurement has been explicitly taken into account to declare the compliance or non-compliance to the specification. The report must not be used by the client to claim product certification, approval, or endorsement by TAF or any government agencies. Report No.: RF200508C01 Page No. 2 / 57 Report Format Version: 6.1.1 Table of Contents Release Control Record .................................................................................................................................. 4 1 Certificate of Conformity ........................................................................................................................... 5 2 Summary of Test Results ........................................................................................................................... 6 2.1 Measurement Uncertainty ..................................................................................................................... 6 2.2 Modification Record .............................................................................................................................. 6 3 General Information ................................................................................................................................... 7 3.1 General Description of EUT .................................................................................................................. 7 3.2 Description of Test Modes ..................................................................................................................... 8 3.2.1 Test Mode Applicability and Tested Channel Detail .................................................................... 9 3.3 Description of Support Units ................................................................................................................ 11 3.3.1 Configuration of System under Test .......................................................................................... 11 3.4 General Description of Applied Standards and References ................................................................ 11 4 Test Types and Results ............................................................................................................................ 12 4.1 Radiated Emission and Bandedge Measurement .............................................................................. 12 4.1.1 Limits of Radiated Emission and Bandedge Measurement ..................................................... 12 4.1.2 Test Instruments ....................................................................................................................... 13 4.1.3 Test Procedures ........................................................................................................................ 14 4.1.4 Deviation from Test Standard ................................................................................................... 14 4.1.5 Test Set Up ............................................................................................................................... 15 4.1.6 EUT Operating Conditions ........................................................................................................ 16 4.1.7 Test Results .............................................................................................................................. 17 4.2 Conducted Emission Measurement .................................................................................................... 31 4.2.1 Limits of Conducted Emission Measurement ........................................................................... 31 4.2.2 Test Instruments ....................................................................................................................... 31 4.2.3 Test Procedures ........................................................................................................................ 32 4.2.4 Deviation from Test Standard ................................................................................................... 32 4.2.5 Test Setup ......................................................................................................…

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FCC SAR Exclusion Report Report Format Version 5.0.0 Report No. : SF200508C01 <Photographs of EUT> Left earbud, Model no.: CX400TW1 L <Antenna Location> Left earbud, Model no.: CX400TW1 L Green line is the antenna located Antenna distance Between human body X Y 8.43 mm 9.19 mm

FCC ID: DMOCX400TW1L IC: 2099A-CX400TW1L 1 PHOTOGRAPHS OF THE TEST CONFIGURATION CONDUCTED EMISSION TEST Mode A FCC ID: DMOCX400TW1L IC: 2099A-CX400TW1L 2 CONDUCTED EMISSION TEST Mode B FCC ID: DMOCX400TW1L IC: 2099A-CX400TW1L 3 RADIATED EMISSION TEST BELOW 1GHz (Z-Plane) Mode A FCC ID: DMOCX400TW1L IC: 2099A-CX400TW1L 4 FCC ID: DMOCX400TW1L IC: 2099A-CX400TW1L 5 FCC ID: DMOCX400TW1L IC: 2099A-CX400TW1L 6 Mode B FCC ID: DMOCX400TW1L IC: 2099A-CX400TW1L 7 FCC ID: DMOCX400TW1L IC: 2099A-CX400TW1L 8 FCC ID: DMOCX400TW1L IC: 2099A-CX400TW1L 9 Mode C FCC ID: DMOCX400TW1L IC: 2099A-CX400TW1L 10 FCC ID: DMOCX400TW1L IC: 2099A-CX400TW1L 11 Mode D FCC ID: DMOCX400TW1L IC: 2099A-CX400TW1L 12 FCC ID: DMOCX400TW1L IC: 2099A-CX400TW1L 13 RADIATED EMISSION TEST ABOVE 1GHz (Z-Plane) Mode A FCC ID: DMOCX400TW1L IC: 2099A-CX400TW1L 14