FCC ID: 2A8YJ-M3 Bone conduction earphone

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An SS 4+ 1+ KASH 2022.10.12 OFUSHO User Manual t TER XE OARS MHA ES CEVET Product specifications Musieplay time Charging time 2h Br version 53 Battery 150mAh cat 4248 Water proof Connectiondistance | 10 meters Charging voltage sv

'8H&:70%6 volume (Bluetooth mode) Full waterproof design P68 Protocol DPAVRCP.HSPHFP Model:M3 Packing list COMM AE Buctooth 44K Y OER. CIID, Summary of button 1.Power on/off button, 2,Volume plus key Volume minus key. 4,microphone, S.indicator light 6,Magnetic thimble, 7.Magnetic data charging cable, functions Correct charging diagram Weng enneston cn daage Controls Function Method of operation oweron [eowittaonce need aabve power of | esas ror btn sari theca anna ec git rating he curently pled phone, the Ofrones

@ charging on/off keying ous song, ong pre

@rusbtton 2 Function Method of operation Minus | SboFpress the minus button to decrease the vlume, pees the pita, minus bulton twice forthe ext song

@rdicator For any assistance please contact Ema su rt@ofusho.co CEM CRMC AUT Principles of bonec uction Most of the sound we hears the result of sound waves passing through our eardrum to make it vibrate so that the sound waves can be conducted to the internal au-

ditory canal The other way is that the sound waves are directly con:

ducted to the internal auditory canal through the vibrat lon of the bone instead of eardrum. This is another way of people hearing their own sound and this sound con:

duction is called bone conduction, Precautions How to wear

> Hang the headphone behind your neck with both speakers clinging to your cheekbones. After that, a djustit until you feel comfortable. Attentions:

+ Please wear the bone-conduction speakers of he headphone at your cheekbones before your ears and do not put them in your ears.

+ Listening to music for an excessive long time may you feel uncomfortable, please try to use a medium volume instead of a big one.

+ No matter how the volume i, please do not make it prevent you from hearing the surrounding sounds. Please take care when using the headphone.

+ Do not throw, press the headphone or put tin the water.

+ The headphone should keep away from fire, water and high voltage devices

+ Itis not for children's use as it contains small pars.

+ Please do not treat it as domestic waste. Instead, send Itto your electrical and electronic recycling station I there is any injury or property loss due to violation of the above contents, we will not bear any responsibilty HH NOTE: This equtment to eed an ol comply wh hints fora Cl B

Shenzhen Tianlai Zhenzi Technology Co., LTD Agent Authorization Company: Shenzhen Tianlai Zhenzi Technology Co., LTD Address: 202, No.48, Huining Road, Xinshi Community, Dalang Street, Longhua District, Shenzhen, China Product Name: Bone conduction earphone Model Number(s): M3, M1, M5, G2 Product Description: Bone conduction 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:

Name:

yechun xie Date: 2022-10-14 manager Title:

Company: Shenzhen Tianlai Zhenzi Technology Co., LTD

Shenzhen Tianlai Zhenzi Technology Co., LTD Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Subject; Request for Confidentiality FCC ID: 2A8YJ-M3 To Whom It May Concern, Pursuant to the provisions of the Commissions rules Title 47 Sections 0.457 and 0.459, we are requesting the Commission to withhold the following attachment(s) as confidential documents from public disclosure indefinitely. Date: 2022/10/14 These documents contain detailed system and equipment descriptions and are considered as proprietary information in operation of the equipment. The public disclosure of these documents might be harmful to our company and would give competitors an unfair advantage in the market. Schematic Diagram Block Diagram Operational Description In additional to above mentioned documents, in order to comply with the marketing regulations in Title 47 CFR 2.803 and the importation rules in Title 47 CFR 2.1204, while ensuring that business sensitive information remains confidential until the actual marketing of newly authorized devices, we request Short Term Confidentiality of the following attachment(s);

User Manual For 45 days, pursuant to Public Notice DA 04-1705. OR For 180 days pursuantto KDB 726920 D01. It is our understanding that all measurement test reports, FCC ID label format and correspondence during the certification review process cannot be granted as confidential documents and this information will be available for public review once the grant of equipment authorization is issued. Sincerely, Signature:

Name: yechun xie Title: manager

Shenzhen Tianlai Zhenzi Technology Co., LTD Model Difference Data2022.10.14 Product description: Bone conduction earphone Model name: M3, M1, M5, G2 Trade Name: N/A FCC ID: 2A8YJ-M3 All the model are the same circuit and RF module, except model names . Regards Sincerely Clients signature :

Clients name / title : yechun xiemanager Contact information / address202, No.48, Huining Road, Xinshi Community, Dalang Street, Longhua District, Shenzhen, China