Brand: PTron Bluetooth : V4.2+EDR Sensitivity : 105±3dB Speaker Size: (DRIVER UNIT) 14.2mm Speaker Impedance: 32Ω Speaker Fequency Range : 20Hz-20KHz Mic Sensitivity: -42±3dB Mic Impedance: 2.2K Transmission Range : Up to 10M Stand by Time: 100 Hours Working Time: 2.5 Hours Battery Capacity : 70mAh Charging Time: 1 Hour Charge Input Voltage: DC 5V Compatible With All Smartphones, tablets & other Bluetooth enabled audio devices PTron InTunes is a modern in-ear sweat-proof sports bluetooth wireless headphones with mic and volume control. Enjoy music while doing the workout or running! It also has a built-in microphone, you can answer the call conveniently without touching your phone. Superior lightweight design headset makes it easy to wear for long hours. Canal-phone earbuds provide external noise cancellation and 14.2mm speaker size makes sure stereo sound quality with less distortion. Ergonomically designed earbuds are comfortable, perfect-fit, anti-drop and unique in appearance. PTron InTunes earphones can handle sweat, light rain and splash easily. It also has an in-line remote control panel with HD microphone to provide hands-free experience. You can easily shuffle through your music playlist, change songs, up or low volume, play/pause music, answer/disconnect call, dial the last called mobile number. PTron InTunes bluetooth headset is compatible with most of the smartphones, tablets. So, no need to worry about wireless connectivity.