Features Brand Coocheer Color Black Size 5.3 x 2.3cm/2.1 x 0.9inch L x W Thickness 1cm/0.4inch 1, Charging Via Mirco USB Connector. 2, Playing Music After successful connecting of bluetooth stereo transmitter with bluetooth receiver device, you can play your music on your bluetooth receiver device. 3, The music from your TV, PC and other device can be transmitted wirelessly to your bluetooth receiver device via this product. 4, Bluetooth receiver device supporting A2DP profiles, such as bluetooth headset, bluetooth speaker, etc. 5, Built in battery, it can be used for 12 hours after being charging fully. The music from your TV, PC and other device can be transmitted wirelessly to your bluetooth receiver device via this product. Bluetooth receiver device supporting A2DP profiles, such as bluetooth headset, bluetooth speaker, etc. Bluetooth 3.0 Stereo Transmitter, pair easily with Bluetooth headphone, headset, speaker and other Bluetooth receivers Instant wireless audio for your 3.5 mm music device CD player, MP3, DVD, etc. Bluetooth Stereo Transmitter 12 hours working time with a single charge, works while charging Specification 1, Bluetooth v3.0 2, Bluetooth Profiles A2DP 3, Bluetooth Frequency Range 2402 MHz-2480 MHz 4, Operating Distance About 10 Meters 5, Charging Input Voltage DC 5V 6, Working Time About 12 Hours 7, Charging Time About 2 Hours 8, Aptx Low Latency 40ms Package Includes 1x Coocheer Bluetooth Stereo Transmitter 1 x 3.5mm Audio Input Jack 1 x USB Cable