Easy to Operate: Simply connect your speaker/headset with our device, immediately transform your speaker/headset into a fashionable wireless Bluetooth speaker/headset. Wireless Play: Removing troubles of wired connection, through the wireless connection and transmission, the user can enjoy a high fidelity music at any place indoor by wireless control. Portable Design: Mini size with clip design the feature of portable can let you carry them to anywhere you want. Compatible with home stereos / speaker, car stereos, headphones that is with 3.5Mm audio input. Support for iPhone, Android phone, other smart phones which with Bluetooth A2DP function. Built-in rechargeable lithium battery, provides up to 4 hours working time, plug and play, and only takes 50 minutes to fully charge it.