Satechi ST-66BTA Audio Cube Portable Bluetooth Speaker System for iPhone/Android Smart Phones/iPad/Tablets/Macbook/Notebooks Portable Bluetooth wireless speaker with compact bass design streams music with 2 *2 Watt Speaker Bluetooth Ver. 2.1: AVRCP, A2DP, automatic connection, only one time pairing Easy charging with integrated Li-Ion-battery (USB chargeable) for max 6 hours playtime Multifunctional three buttons allow Power on/off, Play/Pause, Next track, Compatible with most Bluetooth devices.