Highlight : Breakthrough Bluetooth 4.1 technology: High-fidelity, NFC, Strong signal, Fast transfer speech, and Low power consumption Enjoy clear and surround stereo music and take call, skip tracks, control volume with a quick tap of your headset. Wireless voice chat on MSN, SKYPE Durability. Up to 8 hrs play & talk time and 180 hrs standby time, never worry this headset will be out of juice in your daily life Ergonomics, considerate and sweatproof design for comfort and anti-fatigue. A behind-the-ear shape design, locks in- won't fall out, enjoy freedom and move freely. Universal device compatibility: compatible with most Bluetooth devices, and reduce white noise. Indicate battery status in IOS system. Version: V4.1 Charging: power adapter output (DC5V 150mA) Battery: High-capability recharegeable lithium polymer battery Profiles Supported: Headset/Handsfree/A2DP/AVRCP/APT-X Bluetooth operation: class 2 Talk time: up to 8hrs Playing time: up to 8hrs Standby time: up to 180hrs NOTE :( This little fellow can only speak Chinese (The voice command is Chinese) But this is not a problems because it does not affect its main functions. Here I can be a translator for this little fellow :) When the headset is on, there will be the automatic voice command: power on When the headset is off, there will be the automatic voice command: power off When being connected successfully, there will be automatic voice command: your headset is connected When being disconnected, there will be automatic voice prompt: your headset is disconnected When the battery is low, there will be voice prompt: battery low Just regard it as your Chinese friend