Amjimshop New USB Bluetooth 3.5mm Stereo Audio Music Receiver Adapter for Speaker Iphone Mp3 Black Our products can be compatible with nearly 95% of mobile phone or computer on the market. Unit size: 55*20*10mm Net weight: 15g Portable design: with mini size ,the feature of portable can let you carry them to anywhere you want. Transmission rate3Mbps Transmission distance: about 10 m Bluetooth 2.1+EDR Support A2DP V1.2 Powered by 5V DC