FeaturesBluetooth Version 4.2Battery Type: NiMH, 10.8V/3000mAHUSB 2.0 Charging 5V (2.1A)Frequency Response: 40Hz to 20kHz @ -3dBBass Boost: 0dB to +6dB @ 45HzThe JBL BassPro Go Portable Subwoofer & Bluetooth Speaker is a powered subwoofer designed to easily mount & charge in any vehicle, augmenting the output of full-range speakers at the lowest frequencies, with quick disconnect features to become a portable Bluetooth speaker and keep the party on the go. With convenient and easy to use controls in or out of the vehicle, BassPro Go allows you to dial in your music exactly the way you want to hear it. The JBL BassPro Go can only be charged whilst docked in the car.• 200W peak• Amplifier Power, Subwoofer Mode: 100Wrms• Selectable Lo-Pass Filter, Subwoofer Mode: 80/100/120Hz• Input Sensitivity, Lo-Level: 400mV to 6V• Input Sensitivity, Hi-Level: 1V to 15V• Fuse Rating: 15A