UPC 603981025132

• HIGH-TECH: Adopt EDR 4.0 wireless technology to transfer music and phone calls. Integrated with high-tech bone conduction module, It can provide you fine-quality original sound with less harm to your eardrum, more safety, comfort and health.
• SAFE AND SOUND: Ensure you can easy call/answer and music listening in driving, riding and running. It is safer and sounder as well as you can sense the surrounding sounds with professional filter.
• PROFESSIONAL FILTER MASK: Ultra-fine filter, one-way filter valves and good breath ability make it a professional filter mask that can filter out PM2.5, suspended particles, haze, dust, exhaust gas, and other particle with minimum diameter of 3 microns.
• FASHION: Cool mask not only can prevent you from dust but also make yourself out of ordinary in cosplay as well as in outdoor riding.
• What You Get: 1*Bone Conduction Mask, 2*Filter Cores, 1*USB Charging Cable, 1*Instruction Manual and Besteker 6-month warranty and friendly customer service

Professional filter mask not only can protect you from automobile exhaust,dust,exhaust gas, but also can be used in COSPLAY which will help you out of ordinary. Note 1.If the connecting distance is beyond the headphone effective range (10 m), the headphone will disconnect with the device.Once in effective range again, they will connect again automatically. 2. If the disconnecting continues for long time (over 3 minutes), you maybe need manual matching. Please replace or clean the filter element regularly to ensure effective resistance to hazardous substances How To Match 1. First Match: Press and hold the power button for six seconds until the indicator light flashes, ,indicating pairing mode(Bluetooth: Lead-out) 2.Search the Bluetooth device on your phone and then choose it 3.If it was connected with last device, it will automatically match in 10s. And the blue light is on. Specifications Technology: CSR8635 / V. 4.0, Class II Transducer sensitivity: 100±3dB Microphone sensitivity: -50±3dB Transmission range: Max. 10m if no blocks Power supply: 320mAh Li battery Standby time: 15 days Standby time: 15 days Play time: 7h (When fully charged) Voice: Dimensional sound Basic Operation - Power on/off: Long press Power button 3s - Answer/Ending call: Click the Power button - Reject call: Long press Power button for 1s - Play/Pause phone music: Click Power button - Switch songs: Long press "+""-" button - Volume control: Click the vol button "+""-" - Match again/manual matching: Shutdown state long press power button 6s - Up/down: Click "+" "-"