Features 1、It connects with any 3.5mm stereo jack to provide Bluetooth convenience. 2、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. 3、Effective distance is 8 ~ 15 meters (Up to 20 meters if barrier‑free). 4、Built in with a rechargeable Li-ion battery provides a long standby time. 5、High performance chip, strong compatibility. Easy to use. Specification Features: It connects with any 3.5mm stereo jack to provide Bluetooth convenience. 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. Effective distance is 8 ~ 15 meters (Up to 20 meters if barrier-free). Built in with a rechargeable Li-ion battery provides a long standby time. High performance chip, strong compatibility. Easy to use. Specification: Supported Bluetooth Protocol: Compliant with Bluetooth 4.0 A2DP HSP HFP OPP OBEX DUN Frequency Range: 2.4GHZ-2.4835GHZ Battery Capacity: 250MA Charging Current: 150MA Charging Time: 2 hours Standby Time: About 720 hours Working Voltage: 3.3 ~ 4.2V Maximum Operating Current: 30mA Continuous Working Hours: 8-10 hours Size: Approx. 60 x 36.5 x 16mm / 2.36 x 1.44 x 0.63inch Effective Distance: 8 ~ 15 meters (Up to 20 meters if barrier-free) Package Weight: 53.3g Quantity: 1pc Package included: 1 x Bluetooth Audio Transmitter 1 x Charging Cable 1 x Audio Line 1 x User Manual Note: 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.