SPECIFICATION USB rechargeable, high-performance optical lens, low profile aluminum front light provides 450 lumens brightness with good value. Rubber strap provides bi-directional tool-free mounting and easy removal on aero / round handlebars or helmet. DESCRIPTION MAX LUMINOUS INTENSITY 450 Lumens LAMP 2 white high power LED’s BATTERY 3.7V 940mAh Lithium Ion (integrated) CONTROL / BURN TIME (APPROX) 4 Modes: 1.5 hr (High) / 3 hr (Middle) / 5 hr (Low) / 10 hr (Blinking) CHARGE / CHARGE TIME (APPROX) Micro USB / 2 hr INPUT 5V 500mA LAMP HOUSING Aluminum / Engineering grade polymer STRAP MOUNT Fits integrated bar/stem combo, aero / round handlebars, & helmet WATERPROOF IPX 6 ADDED FEATURE Low battery indicator SIZE 6.7 x 4.7 x 2.7 cm / 2.6” x 1.9” x 1.1” WEIGHT 73 g / 2.57 oz