Features Built-in Lithium Ion battery for up to 5 hours of wireless playback MicroUSB charging port and 3.5mm audio jack for universal connectivity and easy charging Supports all PC/Mac, MP3 players, smartphones, and tablets Engineered for sound - Strong bass and clear highs produce an exciting audio signature Specifications Bluetooth Class 2.1+EDR, A2DP supported Input DC 5V/1A Speaker Output 3 watts, 40mm driver Battery 450 mAh Dimensions 60(w) x 50(h) x 60(d) mm weight 12 ounces Certification FCC, CE