Edifier USA iF335BT Bric Connect Portable Bluetooth Speaker Built-in microphone with Bluetooth phone answering capabilities allowing hands-free calls, conference calls and video chats Enhance movie & video streaming on your mobile/Bluetooth device with great audio Wireless remote control with volume, track and play/pause adjustment Battery and AC power options for portable or stationary use (6 AA Batteries-not included) Class D amplifier with 2 x 23/4 inch (70mm) full range speaker drivers and Bass reflex port for powerful bass audio output