2AWHD-H-900Bone Conduction Wireless Teaching System

When you firet get your bone conduction headset please ensure you plug both units inand fully charge each units before useThe headset uses the DC+5V to charge the bone conduction headsetThe waikie taikie uese the DC+10V to charge the walkie talkie headset DC5V IN headset DC5V IN Changes or modifications not expressly approved by the party responsible for compliance could void the user'sauthoritytooperatetheequipment FCCWARNING Thisdevicecomplies withPart 15of the FCCRules. Operationis subject tothefollowing 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 Thisdeviceshouldbe installedandoperatedwithaminimumdistanceof 15cmbetweentheantennaandall persons.This device has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of theFCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residentialinstallation. This devicegenerates, uses andcan radiate radio frequencyenergyand, if not installed and used in accordancewith the instructions, may cause harmfulinterference toradiocommunications.However, there is no guarantee that interference will not occur in a particular installation. If this device does causeharmful interference to radio or television reception, which can be determined by turning the device off and on, the useris encouraged totry to correct theinterference by oneor moreof thefollowing measures:--Reorient or relocate the receiving antenna.--Increase theseparation between thedeviceand receiver.--Connect thedeviceintoanoutletona circuitdifferent fromthattowhichthe receiver is connected.--Consult thedealer or an experienced radio/TVtechnician for help Jseries H-900+H-906C FCC ID:2AWHD-H-900

June 29, 2020 Equipment Autorisation Division Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 FCC ID: 2AWHD-H-900 Product Name: Bone Conduction Wireless Teaching System Request for Confidentiality Pursuant to Sections 0.457 and 0.459 of the commissions rules, we hereby request that the following documents be held confidential:  Schematics  Block diagram  Operation description These materials contain trade secrets and proprietary information and are not customarily released to the public. The public disclosure of this information might be harmful to the company and provide unjustified benefits to our competitors. <Signature>： Name：BOBY XIAO Title：Manager Applicant Company：Shenzhen HXD Electrics Co., Ltd.

Shenzhen HXD Electrics Co., Ltd. Statement We Shenzhen HXD Electrics Co., Ltd. Hereby Declare that The product Bone Conduction Wireless Teaching System, models no. H-900, H-900A, H-910B are all identical in interior structure, electrical circuits and components, and just the model names are different for the marketing requirement. Your assistance on this matter is highly appreciated. Yours sincerely, Signature: Company Name: Shenzhen HXD Electrics Co., Ltd.

June 29, 2020 Federal Communications Commission Authorization & Evaluation Division 7345 Oakland Mills Road Columbia, Maryland 21046 Authority to Act as Agent On our behalf, I appoint Shenzhen Timeway Testing Laboratories/ Zone C, 1st Floor, Block B, Jun Xiang Da Building, Zhongshan Park Road West, Tong Le Village, Nanshan District, Shenzhen, China. (Name of Agent company name and address) to act as our agent in the preparation of this application for equipment certification. I certify that submitted documents properly describe the device or system for which equipment certification is sought. I also certify that each unit manufactured, imported or marketed, as defined in the Federal Communications Commission’s regulations will have affixed to it a label identical to that submitted for approval with this application. For instances where our authorized agent signs the application for certification on our behalf, I acknowledge that all responsibility for complying with the terms and conditions for certification, still resides with Shenzhen HXD Electrics Co., Ltd. / 7A, Building D, ZhongTai Science Park, ZhuAo Third Industrial Zone, Baoan, SHENZHEN, China <Signature>： Name：BOBY XIAO Title：Manager Applicant Company：Shenzhen HXD Electrics Co., Ltd.

Model:H-900(For Transmitter) Input:DC10V , With li-ion battery 7.4V Trade Mark:Olander Aquatalk Bone conduction wireless teching system FCC ID:2AWHD-H-900 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

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FCC ID: 2AWHD-H-900 RF Exposure Applicable Standard According to §1.1307(b)(5), systems operating under the provisions of this section shall be operated in a manner that ensure that the public is not exposed to radio frequency energy level in excess of the Commission’s guideline. This is a Portable device. The Section 4.3.1 and Appendix A of KDB447498 D01 V05 was used as the guidance. Calculation Result (Worse case) High Channel [(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance, mm)] ꞏ [√f(GHz)] =2.82/5 * 0.29= 0.16, this value is less than 3.0 for 1-g SAR and ≤ 7.5 for 10-g extremity SAR. The SAR measurement is not necessary.

Report No.: FCC2005297-01 File reference No.: 2020-06-28 Applicant: Shenzhen HXD Electrics Co., Ltd. Product: Bone Conduction Wireless Teaching System Model No.: H-900, H-900A, H-910B Brand Name: 1DORADO, GOODENT Test Standards: FCC Part15.236 Test result: It is herewith confirmed and found to comply with the requirements set up by ANSI C63.10&FCC Part 15 regulations for the evaluation of electromagnetic compatibility Approved By Jack Chung Manager Dated: June 28,2020 Results appearing herein relate only to the sample tested The technical reports is issued errors and omissions exempt and is subject to withdrawal at SHENZHEN TIMEWAY TESTING LABORATORIES Zone C, 1st Floor, Block B, Jun Xiang Da Building, Zhongshan Park Road West, Tong Le Village, Nanshan District, Shenzhen, China Tel (755) 83448688, Fax (755) 83442996, E-Mail:[email protected] Report No.: FCC2005197-01 Page 2 of 31 Date: 2020-06-28 The report refers only to the sample tested and does not apply to the bulk. This report is issued in confidence to the client and it will be strictly treated as such by the SHENZHEN TIMEWAY TESTING LABORATORIES. It may not be reproduced rather in its entirety or in part and it may not be used for adverting. The client to whom the report is issued may, however, show or send it . or a certified copy there of prepared by the SHENZHEN TIMEWAY TESTING LABORATORIES. to his customer. Supplier or others persons directly concerned. SHENZHEN TIMEWAY TESTING LABORATORIES. will not, without the consent of the client enter into any discussion of correspondence with any third party concerning the contents of the report. In the event of the improper use of the report. The SHENZHEN TIMEWAY TESTING LABORATORIES. reserves the rights to withdraw it and to adopt any other remedies which may be appropriate. Special Statement： The testing quality ability of our laboratory meet with "Quality Law of People's Republic of China" Clause 19. The testing quality system of our laboratory meet with ISO/IEC-17025 requirements, which is approved by CNAS. This approval result is accepted by MRA of APLAC. Our test facility is recognized, certified, or accredited by the following organizations: CNAS-LAB Code: L2292 The EMC Laboratory has been assessed and in compliance with CNAS-CL01 accreditation criteria for testing Laboratories (identical to ISO/IEC 17025:2005 General Requirements) for the Competence of testing Laboratories. FCC-Registration No.: 744189 The EMC Laboratory has been registered and fully described in a report filed with the (FCC) Federal Communications commission. The acceptance letter from the FCC is maintained in our files. Registration No.: 744189. Industry Canada (IC) —Registration No.:5205A The EMC Laboratory has been registered by Certification and Engineering Bureau of Industry Canada for radio equipment testing with Registration No.: 5205A. A2LA (Certification Number:5013.01) The EMC Laboratory has been accredited by the American Association for Laboratory Accreditation (A2LA). Certification Number:5013.01 Report No.: FCC2005197-01 Page 3 of 31 Date: 2020-06-28 The report refers only to the sample tested and does not apply to the bulk. This report is issued in confidence to the client and it will be strictly treated as such by the SHENZHEN TIMEWAY TESTING LABORATORIES. It may not be reproduced rather in its entirety or in part and it may not be used for adverting. The client to whom the report is issued may, however, show or send it . or a certified copy there of prepared by the SHENZHEN TIMEWAY TESTING LABORATORIES. to his customer. Supplier or others persons directly concerned. SHENZHEN TIMEWAY TESTING LABORATORIES. will not, without the consent of the client enter into any discussion of correspondence with any third party concerning the contents of the report. In the event of the improper use of the report. The SHENZHEN TIMEWAY TESTING LABORATORIES. reserves the rights to withdraw it and to adopt any other remedies which may be appropriate. Test Report Conclusion Content 1.0 General Details ................................................................................................ 4 1.1 Test Lab Details................................................................................................ 4 1.2 Applicant Details.............................................................................................. 4 1.3 Description of EUT .......................................................................................... 4 1.4 Submitted Sample............................................................................................. 4 1.5 Test Duration.................................................................................................... 5 1.6 Test Uncertainty................................................................................................. 5 1.7 Test By.......................................................................................................... 5 2.0 List of Measurement Equipment......................................................................... 6 3.0 Technical Details............................................................................................. 7 3.1 Summary of Test Results..................................................................................... 7 3.2 Test Standards.................................................................................................. 7 4.0 EUT Modification............................................................................................. 7 5.0 Test Results.................................................................................................... 8 5.1 E.U.T. Operation Condition................................................................................. 8 5.2 Test Procedure & Measurement Data...................................................................... 8 5.2.1 Carrier Radiated Power & Radiated Spurious Emissions..........................................…

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Conducted Emission Te s t Setup: Radiated Emission Te s t Setup: