1 year warranty Bluetooth Version:4.1+EDR Bluetooth Protocol:HFP,HSP,A2DP,AVRCP RF Range:32 Inch(10 Meter) Noise reduction:DSP Supports battery display Calling/Playing Time:5-6 hours Charging time: 1-2 hours Standby time:100-200 hours Battery Capacity:70mAH function:call,Say telephone number,Call Answer,Call refuse,Call transfer,Call re-dial;Music Play, Pause, Prev, Next

• This headphones is CSR Bluetooth Chip,So Maybe sometimes you can't connect your device successfuly.But don't worry ,If it happens ,Please turn off your device and connect bluetooth again ,Please comfire your device prompt"connect successfully" before you Switching your Phone.
• These headphones are sweat and weather proof because they're designed to withstand anything Mother Nature throws at them ,This means you don't have to worry about sweat-in case you're running or at GYM
• Bluetooth 4.1 gives you total freedom with advanced Pure Sound and Signal Plus technology delivering incredible audio performance

This headphones is CSR Bluetooth Chip,So Maybe sometimes you can't connect your device successfuly.But don't worry ,If it happens ,Please turn off your device and connect bluetooth again ,Please comfire your device prompt"connect successfully" before you Switching your Phone.YZTC