Universal front light for helmet or handlebar. The HeadLux 100 USB light features convenient cable-free charging with direct connection to the USB port. Two bright 0.5 W white LEDs provide up to 100 lumens with three light modes. Tool-free assembly and disassembly is secured with a single silicone strip. IPX6 water resistance ensures perfect protection against rain. Maximum luminous flux: 100 Lumen Light source: 2x white high-luminous LED Battery: 3.7V 500mAh Lithium Ion (integrated) Lighting modes: 1.5 hours. (high luminance) / 3.3 hrs. (medium luminance) / 40 hrs. (blinking) Charging: Micro USB / 2 hours Input: 5V 500mA Material: engineering grade polymer Mounting: silicone strap Waterproof: IPX 6 Additional features: low battery signal Dimensions: 6.9 x 4.3 x 2.2 cm Weight: 32 g