Black AEC Noise Reduction Wireless Bluetooth Headphones 3.0 Stereo Earphone Over-the-ear Headset, Built-in Microphone Volume Control Brand:AEC ( Warranty: 1year ) Bluetooth version: V3.0+EDR;Support 3.5 mm stereo audio input Compatible with Bluetooth enabled devices - easy syncing Applied to iPhone, iPad, Galaxy, HTC, Cell phone, Tablet, PC, Laptop Built-in microphone support digital signal processing echo cancellation technology