JVC XS-N2249B Bluetooth Drum Stereo Speaker Bundle Features: Bluetooth distance: approx 20 meters Speakerhone Capability Built-in Rechargeable Battery USB charging function supported Playing Time: approx 4H Drum Function IPX7 Waterproof Compact Size Specifications: BT Solution: 4.2 Input voltage: 5v Driver: 45mm Output power: 10W Frequency range:100Hz-20kHz Battery Capacity: 3.7V 2000mAh Product size: 75 75 210MM Unit Weight: 573g Powerbank: - Capacity: 2400 mAh - Input: DC5V - 1000mA - Output: DC 5.3V - 1000mA (MAX) - Size: 22 45 96mm - Micro USB Cable Included What's in the box 1 x JVC XS-N2249B Bluetooth Drum Stereo Speaker Bundle 1 x 2400 mAh Power Bank (*colour may vary)