2ASDIES303-LWireless Headphone

名称：1MORE ComfoBuds 2 舒适豆真无线耳机 触摸耳机感应区域可操控通话和播放功能。 * 选曲及音量调节，可通过 1MORE MUSIC APP 进行设置或在手机等设备端进行操作。 * 上述功能适用于单、双模式使用时的任一耳机。 * 以上功能定义因设备不同可能略有差异。 1MORE ComfoBuds 2 舒适豆真无线耳机产品售后服务严格依照《中华人民共和国消费者权 益保护法》、《中华人民共和国产品质量法》实行产品售后服务，服务内容如下： 在产品自购买之日起一年的免费保修期内，您可以依照本规定享受退货、换货、维修的权利， 修理、换货、退货应当凭相关订单号或发票办理。 1．7 日无理由的退货（电商渠道），由用户承担物流费用； 2．免费维修或以换代修的产品的保修期仍然按原始产品的购买日期计算一年免费保修期。 3．本产品出现《产品性能故障表》所列性能故障的情况，经检测确定后，可以免费享受如下 服务。 本表格依据 SJ/T 11364 的规定编制。 ：表示该有害物质在该部件所有均质材料中的含量均在 GB/T 26572 规定的限量要求以下。 ：表示该有害物质至少在该部件的某一均质材料中的含量超出 GB/T 26572 规定的限量要求。 非保修条例 1．未经授权的维修、误用、碰撞、疏忽、滥用、进液、事故、改动、不正确的使用非本产品 配件，或撕毁、涂改标贴、防伪标记； 2．已超过一年保修期； 3．因不可抗力造成的损坏； 4．不符合《产品性能故障表》所列性能故障的情况； 5．因人为原因导致本产品及其配件产生《产品性能故障表》所列性能故障； 6．产品附送的任何配件或赠品。 更多服务可登录 1MORE 官方网站 www.1more.com 点击“服务”项 或咨询服务热线：400-992-0909 产品中有害物质的名称和含量 播放时取下耳机，将自动暂停；戴上后，继续播放。 1MORE MUSIC APP 可关闭“自动播放”功能。 1. 如开机时，左、右耳机无法正常配对，打开盒盖，3 连击配对按钮，进入强制配对。 2. 清除手机连接记录： 将左、右耳机放入充电盒中，长按配对按钮 8 秒，强制清除手机连接记录。 3. OTA 固件升级：左、右耳机蓝牙连接时，可直接在 1MORE MUSIC APP 上同步升级。 * 1MORE MUSIC APP 的所有功能，在不同手机及操作系统上使用或有不同，请联系客服了 解更多详情。 1MORE ComfoBuds 2舒适豆 用户指南 ES303 制造商：万魔声学股份有限公司 地址：深圳市南山区留仙大道 3333 号塘朗城 A 座 35 楼 服务热线：400-992-0909 2ASDIES303-R XXXXXXXXX Manufacturer: Tiinlab Corporation Add: No. 3333, Liuxian Avenue, Tower A, 35th Floor, Tanglang City, Nanshan District, Shenzhen, China XXXXXXXXXXXXX X-X-XXX-XXXX R XXX-XXXXXX 中国内地用户可扫描二维码，下载 1MORE MUSIC APP 进行产品升级，体验更完整的功能。 中國内地以外的用戶可下載 1MORE MUSIC APP 進行產品升級，體驗更完整的功能。 For users outside mainland China, please download the 1MORE MUSIC APP for product upgrades and additional features. 耳机 x 1副 + 充电盒 x 1Type-C 充电线 x 1 开机:打开盒盖，耳机即开机。 耳机置于盒中，开盖即左、右自动配对。 1、首次连接，开机后即进入搜索配对。如 3 分钟后无 法连接，耳机将关机。 2、已连接过设备的耳机，将自动与该设备进行蓝牙配对。 3、耳机与新设备连接：非通话状态下，长按配对按钮 3 秒，即可与新设备进行配对连接。 * 上述功能适用于单、双模式使用时的任一耳机。 * 上述功能适用于单、双模式使用时的任一耳机。 包装内容 耳机佩戴 耳机与蓝牙设备配对连接 充电 开、关机 自动暂停 / 播放功能 其它功能 环保支持 电量提示 左、右耳机配对 触控 售后产品保修说明 提示 警告 扫描、关注 1MORE 官方微信公众号 耳帽 × 1 型号： ES303 耳机重量（单个）：4.3 克 充电盒重量：26.9 克 整机重量：36.5 克 耳机尺寸：39.25 × 17.92 × 18.7 mm 充电盒尺寸： 68.8 × 30 × 26.7 mm 耳机电池容量（单个）：43 mAh 充电盒电池容量：410 mAh 耳机充电时间：45 分钟 充电盒充电时间：80 分钟 使用时长 * 耳机满电状态 音乐播放：5.5 小时* * 耳机满电＋充电盒满电状态 音乐播放：22 小时* 喇叭阻抗：28 Ω 通讯距离：10 米（在空旷环境下） 蓝牙规范：Bluetooth 5.2 蓝牙协议：HFP / A2DP / AVRCP 输入：5V 1A 工作温度：0 °C ~ 45 °C 频率波段：2.400 GHz ~ 2.4835 GHz 规格参数为实验室测试数据。 * 播放时长为 AAC 格式、50% 音量条件下的实验室测算数据，依设备设置、环境、使用情况及诸多其他因素 可能有所差异。 制造商：万魔声学股份有限公司 地址：深圳市南山区留仙大道 3333 号塘朗城 A 座 35楼 执行标准：GB8898 简中 耳机外壳 电路板及组件 电池 耳套 配件 充电线 部件名称 铅 (Pb) 汞 (Hg) 镉 (Cd) 六价铬 (CrVI) 多溴联苯 (PBB) 多溴二苯醚 (PBDE) 有害物质 产品性能故障表 性能故障 名称 1MORE ComfoBuds 2 舒适豆 蓝牙耳机听不到声音 通话过程中，对方听不到声音 无法为蓝牙耳机充电 服务政策服务类型 退货 换货 维修 自签收次日起 7 天内产品质量原因退货 自签收次日起 15 天内产品质量原因换货 自签收次日起 1 年内产品质量原因维修 FAQ 1. 耳机无法开机，该如何解决？ 请确认耳机有电，若耳机没有电，请充电 30 分钟以上再开机。 * 更多更细节的产品实际使用问题解析，请登录 1MORE 官方网站“技术支持”项进行查询。 6. 使用第三方音乐播放软件时，为什么部分操控功能与说明书定义不一致？ 1）手机软件与第三方软件因定义不同而导致耳机操控功能有差异； 2）建议使用品牌手机系统自带音乐播放器。 7. 调节耳机音量到最大后，声音仍偏小，该如何解决？ 在不同的手机操作系统内（如安卓），耳机音量加减功能与手机音量加减功能是独立操作状态， 请根据您的具体需求，分别调节手机及耳机的音量。 8. 初次使用 1MORE MUSIC APP，无法正常连接对应的耳机，该如何解决？ 安卓手机用户进入 1MORE MUSIC APP 界面时，请选择“始终允许”获取设备的定位信息。 5. 蓝牙连接不稳定，出现断续情况，该如何解决？ 1）请尽量缩短设备与耳机之间的距离，避开实体障碍物； 2）请远离强干扰源环境（Wi-Fi / GPRS 等）； 3）请确保手机天线不被遮挡。 4. 在安卓系统手机连接耳机成功后，无法通话，该如何解决？ 在耳机与手机连接成功后，点击所连接设备名称右边的图标，进入后确保“手机音频”选项已被开启。 3. 安卓系统手机连接耳机成功后，无法听到音乐，该如何解决？ 在耳机与手机连接成功后，点击所连接设备名称右边的图标，进入后确保“媒体音频”选项已被开启。 2. 耳机与手机蓝牙无法正常连接，连接时间长，该如何解决？ 1）如左、右耳机无法配对、仅一个耳机可与手机连接时，可将左、右耳机放入盒中，快速 3 击配 对按钮，左、右耳机即可与手机连接。 2）如需与新设备连接，开机且非通话状态下，将左、右耳机放回盒内，长按配对按钮 3 秒，选择 新设备名，耳机将与新设备进行蓝牙配对。 1. 请勿以任何理由拆除或维修改装耳机，否则可能会导致起火、电子击穿甚至彻底损坏本产品； 2. 请勿将设备置于温度过低或过高（0°C 以下或 45°C 以上）的环境中； 3. 请勿在雷暴天气下使用该设备，雷暴可导致设备工作不正常，并增加触电的危险； 4. 请勿用油及其它挥发性液体擦拭本产品； 5. 请勿连续长时间佩戴耳机（超过 6 小时），尤其不要长时间开最大音量听耳机； 6. 请勿在骑车或开车的状态下佩戴耳机，因为这种行为在某些国家属于违法行为； 7. 6 岁以下儿童请在成人监护下使用耳机； 8. 本产品内含锂电池，禁止拆解、撞击、挤压或投入火中。若出现鼓胀，请勿使用。请勿置于 高温环境中。 欢迎访问 1MORE 社区：bbs.1more.com 登录 www.1more.com，注册成为 1MORE 会员，更多精彩在等你。 关机:将耳机放入盒中， 关闭盒盖，即关机充电。 使用 Type-C 充电线充电，一次充 满需约 80分钟。满电时充电盒 LED 绿灯长亮。 使用充电盒给耳机充电，一次充 满需约 45 分钟。当充满电时， 耳机 LED 灯熄灭。 低电量提示：当耳机还能使用 约 25 ~ 30 分钟时，耳机将播 放提示音。 当充电盒的电量不足以给耳 机供电时，充电盒的 LED 将闪红灯。 接听 / 挂断：双击 手机语音助手：蓝牙连接， 非通话时三击 播放 / 暂停：双击 通话 音乐 2ASDIES303-L Phone calls and music can be controlled by tapping the outside of the earbuds. * To decline a call, please operate on paired mobile phone. * To change a song or control volume, please set up on 1MORE MUSIC APP or operate on paired mobile phone or device. * Above functions are available for either earbud in individual or Stereo mode. * Above functions may vary with different devices. Automatically pause music when taking out your headphones, and resume once you put them back on. To turn off Auto-Play, connect the headphones to the 1MORE MUSIC App and change in the settings. 1. If the headphones cannot pair normally when powered on, open the case and quickly click the pairing button 3 times to reset the Left & Right pairing process. 2. To unpair the cellphone: Put both the Left & Right headphones into the case and press/ hold the pairing button for 8 seconds. 3. OTA Firmware Update: can be done synchronously with 1MORE Music APP when Left and Right headphones Bluetooth paired to each other. * Functions of 1MORE MUSIC APP may vary with different cellphones or operating systems. For more details, please contact our customer service. Headphones × 1 Pair Charging Case × 1 Type-C Charging Cable × 1 1. To connect to your device during first use, turn the headphones on to enter pairing mode. Headphones will power off if not paired to a device within 3 minutes. 2. After first successful pairing, headphones will automatically connect to your device. 3. To pair with a new device: put headphones back into the case, press and hold the pairing button for 3 seconds when powered on (no music or phone calls) to re-enter pairing mode. * Above functions are available for either earbud in individual or Stereo mode. * Above functions are available for either earbud in individual or Stereo mode. In The Box Placement Bluetooth Pairing To The Device Charging Methods Power Smart Playback Extra Functions Battery Notification Headphones Pairing Tap Controls Case Protector× 1 英文 Power Off: Put the headphone…

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Tiinlab Corporation Agent Authorization Company: Tiinlab Corporation Address: No. 3333, Liuxian Avenue, Tower A, 35th Floor, Tanglang City, Nanshan District, Shenzhen, Guangdong, P.R. China Product Name: Wireless Headphone Model Number(s): ES303 Product Description: Wireless Headphone 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: 2021-07-19 Name: Lance Lang Title: Manager Company: Tiinlab Corporation

Tiinlab Corporation Date: Jun. 25, 2021 To: Federal Communications Commission, Authorization & Evaluation Division, 7435 Oakland Mills Road, Columbia, MD 21046 To Whom It May Concern: The Tiinlab Corporation, the undersigned, hereby authorizes Mr. Wu Xuewen from Shenzhen BALUN Technology Co., Ltd., to act on the behalf of the Tiinlab Corporation solely in matters relating to the application for an FCC equipment authorization for FCC ID: 2ASDIES303-L including the signing of documents in connection with this Application. Necessary acts carried out by Shenzhen BALUN Technology Co., Ltd. in connection with the Application shall have the same effect as acts of the Tiinlab Corporation. The Tiinlab Corporation also hereby certify that no party to this application is subject to a denial of benefits, including FCC benefits, pursuant to Section 5301 of the Anti‐Drug Abuse Act of 1988, 21 U.S.C. Section 862. Yours Sincerely, Print name: Lance Lang Title: Manager Tiinlab Corporation

Tiinlab Corporation Date: Jun. 25, 2021 To: Federal Communications Commission, Authorization & Evaluation Division, 7435 Oakland Mills Road, Columbia, MD 21046 RE: Tiinlab Corporation FCC ID: 2ASDIES303-L FCC Certification Confidentiality Request Gentlemen: This letter is to comply with 47 CFR 0.457 and 0.459 pertaining to confidentiality material. Tiinlab Corporation requests that the following documents regarding this submission for FCC ID : 2ASDIES303-L be kept Long‐Term confidential: Ex hibit Type File Na me Block Dia g ram Block Diagram.pdf Schematics Schematics.pdf Operational Description Operational Description.pdf And below exhibit kept short‐term confidential (180 days): Exhibit Type File Name External Photos External Photo.pdf Internal Photos Internal Photo.pdf Test Setup Photos Test Setup Photos.pdf Users Manuals Users Manual.pdf Those documents contain detailed system and equipment description and related information about the product which Tiinlab Corporation considers to be confidential proprietary, a custom design and, otherwise, not releasable to the general public. Since this design is a basis form which future technological products will evolve, Tiinlab Corporation considers this information would be of benefit to its competitors, and that the disclosure of the information in these documents would give competitors an unfair advantage in the market. Thank you for your attention to this matter. Yours Sincerely, Print name: Lance Lang Title: Manager Tiinlab Corporation Tune-up Tune-up.pdf

Annex No.: BL-SZ2160267-AW-1 1 / 4 EUT EXTERNAL PHOTOS FRONT VIEW OF EUT BACK VIEW OF EUT Annex No.: BL-SZ2160267-AW-1 2 / 4 LEFT SIDE VIEW OF EUT RIGHT SIDE OF EUT Annex No.: BL-SZ2160267-AW-1 3 / 4 TOP VIEW OF EUT BOTTOM VIEW OF EUT Annex No.: BL-SZ2160267-AW-1 4 / 4 Accessory-Charging Case

FCC ID:2ASDIES303-L Location ： The device is too small to display FCC ID. FCC ID will displayed on user manual.

Annex No.: BL-SZ2160267-AI-1 1 / 3 EUT INTERNAL PHOTOS EUT UNCOVER VIEW EUT UNCOVER VIEW FPC Antenna Annex No.: BL-SZ2160267-AI-1 2 / 3 MAIN BOARD TOP VIEW MAIN BOARD REAR VIEW RF Chip Annex No.: BL-SZ2160267-AI-1 3 / 3 Battery Photo (FRONT) Battery Photo (REAR)

Report No.: BL-SZ2160267-701 2 / 36 Revision History Version Issue Date Revisions Content Rev. 01 Jul. 08, 2021 Initial Issue TABLE OF CONTENTS 1 GENERAL INFORMATION .................................................................................................................... 4 1.1 Identification of the Testing Laboratory ..................................................................................... 4 1.2 Identification of the Responsible Testing Location .................................................................... 4 1.3 Test Environment Condition ..................................................................................................... 4 1.4 Announce ................................................................................................................................. 4 2 PRODUCT INFORMATION ................................................................................................................... 5 2.1 Applicant Information ................................................................................................................ 5 2.2 Manufacturer Information .......................................................................................................... 5 2.3 Factory Information ................................................................................................................... 5 2.4 General Description for Equipment under Test (EUT) ............................................................... 5 2.5 Ancillary Equipment .................................................................................................................. 5 2.6 Technical Information ............................................................................................................... 6 3 SUMMARY OF TEST RESULT ............................................................................................................. 7 3.1 Test Standards ......................................................................................................................... 7 3.2 Device Category and SAR Limit ............................................................................................... 8 3.3 Test Result Summary ............................................................................................................... 9 3.4 Test Uncertainty ..................................................................................................................... 10 4 MEASUREMENT SYSTEM ................................................................................................................. 11 4.1 Specific Absorption Rate (SAR) Definition .............................................................................. 11 4.2 DASY SAR System ................................................................................................................ 12 5 SYSTEM VERIFICATION .................................................................................................................... 19 5.1 Purpose of System Check ...................................................................................................... 19 5.2 System Check Setup .............................................................................................................. 19 6 TEST POSITION CONFIGURATIONS ................................................................................................ 20 6.1 Head Exposure Conditions ..................................................................................................... 20 7 MEASUREMENT PROCEDURE ......................................................................................................... 22 Report No.: BL-SZ2160267-701 3 / 36 7.1 Measurement Process Diagram ............................................................................................. 22 7.2 SAR Scan General Requirement ............................................................................................ 23 7.3 Measurement Procedure ........................................................................................................ 24 7.4 Area & Zoom Scan Procedure ................................................................................................ 24 8 CONDUCTED RF OUPUT POWER .................................................................................................... 25 8.1 Bluetooth ................................................................................................................................ 25 9 TEST EXCLUSION CONSIDERATION ............................................................................................... 26 9.1 SAR Test Exclusion Consideration Table ............................................................................... 27 10 TEST RESULT .................................................................................................................................... 28 10.1 Bluetooth ................................................................................................................................ 28 11 SAR Measurement Variability .............................................................................................................. 29 12 SIMULTANEOUS TRANSMISSION..................................................................................................... 30 13 TEST EQUIPMENTS LIST .................................................................................................................. 31 ANNEX A SIMULATING LIQUID VERIFICATION RESULT .................................................................... 32 ANNEX B SYSTEM CHECK RESULT .................................................................................................... 33 ANNEX C TEST DATA ............................................................................................................................ 35 ANNEX D EUT EXTERNAL PHOTOS ..........................................................................…

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Report No.: BL-SZ2160267-603 2 / 64 Revision History Version Issue Date Revisions Content Rev. 01 Jul. 08, 2021 Initial Issue TABLE OF CONTENTS 1 ADMINISTRATIVE DATA (GENERAL INFORMATION) .......................................................................... 5 1.1 Identification of the Testing Laboratory ....................................................................................... 5 1.2 Identification of the Responsible Testing Location ...................................................................... 5 1.3 Laboratory Condition ................................................................................................................... 5 1.4 Announce .................................................................................................................................... 5 2 PRODUCT INFORMATION ...................................................................................................................... 6 2.1 Applicant Information ................................................................................................................... 6 2.2 Manufacturer Information ............................................................................................................ 6 2.3 Factory Information ..................................................................................................................... 6 2.4 General Description for Equipment under Test (EUT) ................................................................ 6 2.5 Technical Information .................................................................................................................. 7 2.6 Additional Instructions ................................................................................................................. 8 3 SUMMARY OF TEST RESULTS .............................................................................................................. 9 3.1 Test Standards ............................................................................................................................ 9 3.2 Verdict ......................................................................................................................................... 9 4 GENERAL TEST CONFIGURATIONS ................................................................................................... 10 4.1 Test Environments .................................................................................................................... 10 4.2 Test Equipment List ................................................................................................................... 10 4.3 Measurement Uncertainty ......................................................................................................... 10 4.4 Description of Test Setup .......................................................................................................... 11 4.4.1 For Antenna Port Test ............................................................................................................... 11 4.4.2 For AC Power Supply Port Test ................................................................................................ 11 4.4.3 For Radiated Test (Below 30 MHz) ........................................................................................... 12 4.4.4 For Radiated Test (30 MHz-1 GHz) .......................................................................................... 12 4.4.5 For Radiated Test (Above 1 GHz) ............................................................................................. 13 4.5 Measurement Results Explanation Example ............................................................................. 14 4.5.1 For conducted test items: .......................................................................................................... 14 Report No.: BL-SZ2160267-603 3 / 64 4.5.2 For radiated band edges and spurious emission test: ............................................................... 14 5 TEST ITEMS ........................................................................................................................................... 15 5.1 Antenna Requirements .............................................................................................................. 15 5.1.1 Relevant Standards ................................................................................................................... 15 5.1.2 Antenna Anti-Replacement Construction .................................................................................. 15 5.1.3 Antenna Gain ............................................................................................................................ 15 5.2 Output Power ............................................................................................................................ 16 5.2.1 Test Limit ................................................................................................................................... 16 5.2.2 Test Setup ................................................................................................................................. 16 5.2.3 Test Procedure .......................................................................................................................... 16 5.2.4 Test Result ................................................................................................................................ 17 5.3 Occupied Bandwidth ................................................................................................................. 18 5.3.1 Limit ........................................................................................................................................... 18 5.3.2 Test Setup ................................................................................................................................. 18 5.3.3 Test Procedure ..................................…

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Report No.: BL-SZ2160267-701&702 CALIBRATION REPORT F.1 E-Field Probe(EX3DV4 - SN:7607) Report No.: BL-SZ2160267-701&702 Report No.: BL-SZ2160267-701&702 Report No.: BL-SZ2160267-701&702 Report No.: BL-SZ2160267-701&702 Report No.: BL-SZ2160267-701&702 Report No.: BL-SZ2160267-701&702 Report No.: BL-SZ2160267-701&702 Report No.: BL-SZ2160267-701&702 Report No.: BL-SZ2160267-701&702 F.2 Data Acquisition Electronics (DAE4 - SN:878) Report No.: BL-SZ2160267-701&702 Report No.: BL-SZ2160267-701&702 Report No.: BL-SZ2160267-701&702 F.3 2450 MHz Dipole Report No.: BL-SZ2160267-701&702 Report No.: BL-SZ2160267-701&702 Report No.: BL-SZ2160267-701&702 Report No.: BL-SZ2160267-701&702 Report No.: BL-SZ2160267-701&702 Report No.: BL-SZ2160267-701&702 Report No.: BL-SZ2160267-701&702

Annex No.: BL-SZ2160267-AR-1 1 / 4 TEST SETUP PHOTOS 1 Radiated Test Photo Below 30MHz 30MHz-1GHz Annex No.: BL-SZ2160267-AR-1 2 / 4 Close-up Above 1GHz Annex No.: BL-SZ2160267-AR-1 3 / 4 Close-up 2 Conducted Test Photo Conducted Test Annex No.: BL-SZ2160267-AR-1 4 / 4 3 Conducted Emissions Test Photo 1 Test Photo 2

Annex No.: BL-SZ2160267-AS-1 1 / 3 TEST SETUP PHOTOS Front Side (0mm) Back Side (0mm) Annex No.: BL-SZ2160267-AS-1 2 / 3 Right Edge (0mm) Left Edge (0mm) Annex No.: BL-SZ2160267-AS-1 3 / 3 Top Edge (0mm) Bottom Edge (0mm)