Specification: Features: _x000D__x000D_It connects with any 3.5mm stereo jack to provide Bluetooth convenience. _x000D_The music from your devices(such as TV, PC, CD player, for iPod, for Kindle Fire, MP3/MP4 etc.) can be transmitted wirelessly to your Bluetooth stereo receiver with much ease. _x000D_Effective distance is 8 ~ 15 meters (Up to 20 meters if barrier-free). _x000D_Built in with a rechargeable Li-ion battery provides a long standby time. _x000D_High performance chip, strong compatibility. Easy to use. _x000D__x000D_Specification:_x000D_Supported Bluetooth Protocol: Compliant with Bluetooth 4.0 A2DP HSP HFP OPP OBEX DUN_x000D_Frequency Range: 2.4GHZ-2.4835GHZ_x000D_Battery Capacity: 250MA_x000D_Charging Current: 150MA_x000D_Charging Time: 2 hours_x000D_Standby Time: About 720 hours_x000D_Working Voltage: 3.3 ~ 4.2V_x000D_Maximum Operating Current: 30mA_x000D_Continuous Working Hours: 8-10 hours_x000D_Size: Approx. 60 x 36.5 x 16mm / 2.36 x 1.44 x 0.63inch_x000D_Effective Distance: 8 ~ 15 meters (Up to 20 meters if barrier-free)_x000D_Package Weight: 53.3g_x000D_Quantity: 1pc_x000D__x000D_Package included:_x000D_1 x Bluetooth Audio Transmitter_x000D_1 x Charging Cable_x000D_1 x Audio Line_x000D_1 x User Manual_x000D__x000D__x000D__x000D_Note:_x000D_Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering. Features: 1It connects with any 3.5mm stereo jack to provide Bluetooth convenience. 2The music from your devices(such as TV, PC, CD player, for iPod, for Kindle Fire, MP3/MP4 etc.) can be transmitted wirelessly to your Bluetooth stereo receiver with much ease. 3Effective distance is 8 ~ 15 meters (Up to 20 meters if barrier?free). 4Built in with a rechargeable Li-ion battery provides a long standby time. 5High performance chip, strong compatibility. Easy to use. PackageList: