Easy to Operate: Simply connect your speaker/headset with our device to transform your speaker/headset into a wireless Bluetooth speaker or headset | Bluetooth 4.2 Multipoint technology | Portable Design: Small size with clip design that can let you carry it anywhere | Support for iPhone, Android phone, other smart phone with Bluetooth. Compatible with home stereos / speaker, car stereos, headphones with 3.5mm audio input | Functions with and without charging cable plugged in: Choose to use with continuous charging, or go completely wireless for hours of playback running on battery