Bundle: Nitecore HC90 900 Lumens Rechargeable LED HeadLamp w/ USB Built-in Charger, Eagletac 2500mAh rechargeable 18650 and Lumentac Keychain Light Maximium 900 Lumens white light output with red green and blue color lights Robust built and easy to use slide switch to continuous adjust brightness and colors Built-in USB charger that allow you to recharge the headlamp Use 1x 18650 Rechargeable battery or 2x CR123A battery (1x Eagletac 2500mAh 18650 included)) Bundle includes Nitecore HC90 Headlamp, head straps, USB charging cable, 2500mAh Eagletac 18650, and a bright Lumentac key chain light