Peak Power 200W Power input USB 5V/0,5A or 1A Peak Power PMPO 200W RMS Power 15W Frequency Response 50Hz-20KHz Woofer size +impedance 6.5 inch, 4ohm Tweeter size +impedance 2 inch, 4ohm Waterproof IPX5 S/N Ratio ≥60dB Battery type Lithium Battery capactity 3600 mAh Battery Playing Time (Max vol.) 2 hours Battery Playing Time (50% vol.) 8.5 hours Battery Playing Time (Low vol.) 15 hours Battery Charging Time 5 hours Battery weight 90gr Bluetooth Version 2.1 Bluetooth frequency 2400-2483.5MHz FM Radio 87.5-108MHz Dimensions: 393 x 351 x 181 mm Net Weight 3100gr