Supports all systems without adding drivers. Compatible with all 3.5mm audio jack. The battery can last for about 5 hours. Supports stereo transmission. Easily change to wireless with this gadget. Model 2 Quantity 1 Color Black Material ABS Wireless Technology Bluetooth technology Bluetooth Standard V2.1 USB Standard 2 Frequency 2.4GHz Operation Range 10 m Suitable Device 3.mm jack audio device Data Transmission Rate 2.4Mbps Sensitivity 100~120dBm OS System 2DP AVRCP Headset Profile Handfree Profile; CD DVD MP3 MP4 Ipad iPod with 3.55 jack or USB port Other Features SR BlueCore5 stereo chip; Built-in 140mAh Li-ion battery; Charge time: 3 hours use time: about 100 hours speak time: 4 hours Packing List 1 x Transmitter 1 x 100~240V 2-flat-pin plug charger 1 x Charging cable (120cm) 1 x English use manual