Volkano Blaster Series 2.1 Channel Bluetooth Speaker - Grey Explosive bass sound Speaker Output: 2W x 2, 4 Ohm Subwoofer Output: 7W, 4 Ohm Speaker Size: 2 inch Subwoofer Size: 4 inch Bluetooth Version: JL ,V2.1 Bluetooth Connection Range: 10 meters Battery Capacity: Rechargeable, 1000mAh, 3.7v Product Size: 145-256mm Frequency Response: 100-20Khz FM Frequency Range: 87.5-108mHz Signal to Noise Ratio: 80dB Power Supply: 5V,1A Audio Input: 3.5mm Aux-in What's in the box 1 x Blaster Speaker Grey