COB headlamp 4 working modes for you to choose: 2 modes per light: white light is strengthened and white light is weakened; 2 modes for red light: constant red light, flashing. When the headlight is on, the red light in the rear battery compartment will light up and alert the rear part. For safer use at dusk. USB Rechargeable Headlamp: The headlamp is equipped with two 3.7V 18650 rechargeable batteries which give you brighter lighting. Can work up to 3-7 hours on a full charge. Waterproof design: lamp head rotates 90 degrees. Made of high quality ABS material with IPX4 waterproof head, but not suitable for diving, using aluminum alloy housing and reflector. User-friendly design: the brightness of 1000 lumens provides up to 100 yards of visibility, giving you much wider peripheral vision, meets your needs at multiple angles. Red light on the back: Red light design helps protect vision nocturnal and will not disturb animals or pets while camping or fishing at night.