Bluetooth Speaker - Fusion, wireless speaker & powerbank Product dimensions (W x H x D): 146 x 81 x 27 mm Print Area: 25 x 25 mm - Nano technology, small size incredible sound - Playtime 15 hours - Built-in microphone for hands-free phone calls - Wireless connectivity Bluetooth 4.0 - Ambient Harmonics technology: full, natural sound with incredible clarity and volume - 6000 mAh power capacity, grade A, Li-Poly, 500+ charge cycles - 2.1A (2100 mA) power output - Max safety x4: over-current, over-charge, over-discharge & short circuit protection - 1 year warranty