Small in size, lightweight and easy to carry. Also looks like a water bottle so perfect for the gym and outdoors. Clear sound and high quality loudspeakers. Has a range of over 10M. Supports Bluetooth V4.2 and is compatible with most electronics on the market, such as your tablet and phone. Hand free. Supports hand-free call function of mobile phone, and has a wide range of applications. ABS material. Output power 4 ohm 3W*1. Frequency: 280HZ-16KHZ. Distortion: less than 0.5%. Battery capacity: 800mAh. Battery voltage: 5V. Charging time: 2h. Play time: about 3-4 hours. Includes charging line and Aux line.