Integrated Bluetooth speaker with exceptional sound quality. Bright light, all the time, even in areas without an electrical connection. Exchangeable Li-ion battery with battery charge and status indicator. 3 switching stages: 100 %, 50 % and 10 % light for extended lighting duration. Power bank function: USB charging port 2 A for devices with USB charging cables such as smart phones, tablets, etc. With adjustable mounting bracket for positioning or mounting on brennenstuhl® tripods.