Multi-functional tool, handheld flashlight, power bank, headlamp, COB. USB rechargeable flashlight. LED energy-saving light bulb, night lighting up to 50 meters range, waterproof, there are 6 lighting modes can be adjusted. Built-in 18650 large capacity lithium battery, normal use 5-12 hours, long life. It can also be used as a USB power bank to charge mobile devices. The product is attached with a head to wear, worn on the head can be used as a headlamp. There are magnets at the end that stick to the surface and release the hands