– Version 4.2, available for most devices with wireless function.
– Built in MIC, available for cell phone to transmit to your phone.
– Built in Li-ion Chargeable battery, charge via USB.
-Charging time : 2hrs
– Stand -by time : 60 Hrs to so
-Continuous working time : About 3.5hrs
– Li-ionBattery : 3.7V/120mA