Description: Receiver : Change the traditional Car Stereo system or Home Audio System into Bluetooth-enabled ones. After paired, play music wirelessly from your Bluetooth-enabled Smart Phones, Laptop, Tablet and more. Transmitter : Can be connected to the audio devices (such as MP3, MP4, TV and PC, etc.) without Bluetooth function, changing them into BT-enabled ones, and making it work with BT-enabled Headset and Speaker. Support Noise Suppression and Echo Cancellation, offering you Magnificent Stereo Sound & Wonderful Sound Quality. Strong Compatibility: Compatible for Android & for iOS smart phones and PAD. Can be applied to TV sets, home theater and other devices; Can also be connected to the phone/computer to play music. Specification: Condition: 100% Brand new and high quality Bluetooth: V4.2 Support: A2DP, AVRCP Support: MP3, WAV, WMA,APE,FLAC Transmission Distance: 10m / 33ft (open space) Battery: Built-in 300mAh Rechargeable Li-polymer battery Working Time: about 8 hours (depend on audio volume) Charging Time: about 2 hours Charging: Micro USB 5V Output: 3.5mm stereo interface Input: 3.5mm stereo interface Power supply: 3.7V Color: Black Material: Plastic Size: 60x36x16mm/2.36x1.42x0.63inch Package Includes: 1 Piece Bluetooth Audio Transmitter/Receiver 1 Piece 3.5mm Audio Cable 1 Piece USB Charging Cable 1 Piece User Manual