Wide Compatibility: Engineered to work optimally with Android/iOS smartphones and tablets; iPod; PC; TV; MP3, MP4 and other Bluetooth enabled devices within 66 feet. Please make sure the driver software of receiving adapter is fully updated when connected to PC or laptop, and you need a SEPARATE Bluetooth adapter when connected with TV. Friendly Reminder: 1.Active noise cancelling technology isolates yourself from external low-frequency noises like airplane cabin noise, city traffic or office air conditional. But CAN NOT eliminate human voices. 2. If you can't connect this headphones to your cell phones or other devices, please ask us for a complete FAQ guidance of Bluetooth Headphones, you can find the solutions finally! 3. In case of that and to get both audio and wearing comfort, please take off the headphone every 1-2 hrs to get your ears relax and protect them from muggy environment in use. 4. The headphone will be off when charged. About Active Noise Cancelling Function You can talk freely or listen to your music regardless of low-frequency sounds like subway or airport Free your ears from these low-frequency damage without affect your speaking quality. How to Pair? 1.Press and hold power button for 6 seconds, until Red & Blue light flash alternately . And prompt voice "power on" and "read to pair" will send out. 2.Turn on the Bluetooth of your device and find "BH900" to connect 3. Play music after pairing and adjust the volume to a proper extent until most noises are cancelled. Specifications Bluetooth Version: CSR 4.1 Operation Range: 66 feet Charging Interface: Micro USB Working Time: Noise cancelling function only 30 hours Bluetooth function only: 15 hours Noise cancelling+Bluetooth function:12 hours Charging Time: Around 2-3 hours Battery Capacity: 3.7V/300mAh Charging Voltage: 5V
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