Features: The use of distance: 10m The latest Bluetooth 4.1 technology Battery capacity: 65mAH Talk time: 4.5 hours Charge hours: 2 hours Standby time: 180 hours Power input: DC5V / 200mA Noise: CVC6.0 The song: Support Agreement: HFP HSP A2DP AVRCP APTX Voice prompts: Support Function: call dialing、 remote answer / end / reject / switch、 telephone redial、 mute、 volume control、 English switch、 smart one for two、 music pause / play、 up and down the song Applications: Supports any、 IPAD tablet、 desktop computer with a Bluetooth device class phones. Not carrying a Bluetooth-enabled desktop computers can be used with a Bluetooth adapter.