Description Description for Built-in 8000 mAh battery, not only can be used as a wireless subwoofer, but also can charge the phone. Touch Bluetooth subwoofer, stereo dual speaker design, compatible with Bluetooth 4.2 mobile phones, and other devices. This 360-degree surround sound of the Bluetooth speaker lets you feel immersive while listening to music, providing you with the perfect music experience. 3d button design, sensitive touch, easy to operate, the operation is not easy to make mistakes. The refined appearance and unique design make this product the best choice for giving gift for friends. Specification: Color: black,grey,gold,rose gold. Battery: 8000 mAh. Size: 169*68*35mm. Frequency response: 40Hz-20KHz Signal to noise ratio: =70dB Wireless transmission distance: up to 10 meters Bluetooth version: V4.2+EDR Output power: 6W Charging voltage: DC-5V Charging current: 800mAh Use time: 20 hours Note: There may be a slight error due to different measurements. There might be a bit color distortions due to different resolutions. Package included: 1 * speaker. 1 * charging cable.