DESCRIPTION: Light up the night! PowerLux Combo includes the HeadLux 100 USB lumen front light and the TailLux 25 USB 25 lumen rear safety light. Both lights feature two super bright LEDs and conveniently plug directly into a USB port for recharging. Quick and easy tool free mounting with single silicone strap. MAX LUMINOUS INTENSITY Front: 100 Lumens Rear: 25 Lumens LAMP Front: 2 super bright 0.5 W white LED’s Rear: 2 super bright red LED’s BATTERY Front: 3.7V 500mAh Lithium Ion (integrated) Rear: 3.7 V 320mAh Lithium Ion (integrated) CONTROL / BURN TIME (APPROX) Front: 3 Modes: 1.5 hr (High) / 3.3 hr (Middle) / 40 hr (Blinking) Rear: 3 Modes: 3 hr (High) / 30 hr (Low) / 40 hr (Blinking) INPUT 5V 500mA CHARGE / CHARGE TIME APPROX USB port / 2 hr SIZE Front: 6.9 x 4.3 x 2.2 cm / 2.7” x 1.7” x 0.9” Rear: 6.3 x 2.7 x 2.5 cm / 2.5” x 1.1” x 1” WEIGHT Front: 32 g / 1.13 oz Rear: 30 g / 1.06 oz (w/ mounting clip) WATERPROOF IPX 6 STRAP MOUNT Front: Fits integrated bar/stem combo, and aero / round handlebars Rear: Fits aero or round seatposts (ø25.4 ø34.9mm), seatstay, and Topeak bags LAMP HOUSING Engineering grade polymer