The EINSTEIN(R) 1000 FLEX by NEBO is a low-profile, compact, 1000 lumen, USB-C rechargeable headlamp with 5 light modes. The included rechargeable battery will power the light for up to 18 hours of use. Features: 5 light modes Compact and lightweight Durable ABS and aluminum construction Water resistant (IPX4) Turbo mode included Rechargeable with flex fuel One button controls power and modes 1 USB-C to USB charging cable Powered by included lithium ion rechargeable battery