Features: 1.Hi-Fi headphone offers high quality sound performance 2.Support hands-free calling, truly releases your hands and ensures your safety while driving 3.Support for answering, rejecting, hanging up and redialing phone functions 4.Built-in rechargeable Li-ion battery, working hours up to 8 hours, standby time up to 160 hours 5.0 type of CSR BT chip, Hi-Fi headset Specification: Features:_x000D_ _x000D_ Hi-Fi headphone offers high quality sound performance. _x000D_ Support hands-free calling, truly releases your hands and ensures your safety while driving. _x000D_ Support for answering, rejecting, hanging up and redialing phone functions. _x000D_ Built-in rechargeable Li-ion battery, working hours up to 8 hours, standby time up to 160 hours. _x000D_ 5.0 type of CSR BT chip, Hi-Fi headset. _x000D_ Voice prompt function, it will give sound like "Power on", "Pairing", "Connected", and make it easy to set and process the operation. _x000D_ Support for iPhone to display the power and to know when to charge. _x000D_ In power save mode, it will turn off automatically after 5 minutes if no working device paired. _x000D_ DIY design, available to be detachable when you want. _x000D_ The low power warning lets you know that the battery is not enough and needs to be recharged. _x000D_ The sound reminder function makes it easy to set up the device based on the sound reminder. _x000D_ Magic tape design lets you install and detach headphone anytime and anywhere. _x000D_ _x000D_ Specification:_x000D_ Condition: Brand New_x000D_ BT Version: 5.0 + EDR_x000D_ Frequency: 2.402GHz-2.480GHZ_x000D_ Transmission Range: 10-15 meters (Depending on the equipment)_x000D_ Microphone Transmission Distance: 1m_x000D_ Li-ion Battery: 3.7V/250mA_x000D_ Playback Time: 5 hours_x000D_ Charging Voltage: 5V_x000D_ Charging Time: 2 hour_x000D_ Delay: 48 hours_x000D_ BT Name: BT8_x000D_ Color: Black_x000D_ Weight: Approx. 120 g / 4.2 oz_x000D_ _x000D_ Package list:_x000D_ 1 * Pair of Helmet BT Headset_x000D_ 1 * Charging Cable_x000D_ 1 * User Manual PackageList: