The NEBO Einstein Cap Light is a 50 lumen rechargeable cap light offering contactless control of power with its sensor mode. It provides up to 18 hours of operation on a single charge. The Cap Light features 'Easy Touch' technology to quickly cycle through 4 light modes, including High, Medium, and Low settings, with a sensor mode that allows contactless power control up to 16 meters away. It is IPX4 water resistant, featuring a silicone band and an adjustable headstrap for a secure fit. The package includes a micro-USB charging cord.