Ride safe & be seen at night with the high-performance helmet light. Innovative double sided helmet mounted light shines white facing forward & red towards the rear & features 4 LEDs for excellent visibility. Rubber straps provides easy installation & flexible mounting options on helmet. MAX LUMINOUS INTENSITY 140 Lumens (Front)10 Lumens (Rear) LAMP 2 white high power LED’s (Front)2 red high power LED’s (Rear) BATTERY 3.7V 680m Ah Lithium Ion (integrated) CONTROL / BURN TIME (APPROX) 4 Modes:3.3 hr (High)5.5 hr (Middle)33 hr (Low)28 hr (Front: Middle / Rear: Blinking) CHARGE / CHARGE TIME (APPROX) Micro USB (Universal Serial Bus) / 2 hr INPUT 5V 500m A LAMP HOUSING Injection molded polymer STRAP MOUNT Fits helmet / road bike dropbar WATERPROOF IPX 6 ADDED FEATURE Low battery indicator SIZE 6.9 x 4.4 x 2 cm / 2.7” x 1.7” x 0.8” WEIGHT 40 g / 1.41 oz