PWR Road 700L is a modular bike light. But it's not JUST another bike light. Not only is it a high powered bike light, but simply take the product apart and you have much more. A lighthead and a PWR Bank to charge devices that is also the battery for all products in the PWR range.   BATTERY INDICATOR - Hate it when you run out of battery with no warning? That'll never happen with PWR Road, with 4 built in battery indicator lights. Tap the bottom of the light to activate the battery indicator. 4 lights = fully charged, 2 lights = half charged etc. EASY TO MOUNT & USE - This light can be mounted on top or below your handlebars, directly under your Garmin, or on your helmet. It comes with a side mount and shim that fits handlebars 22.2-38.1mm diameter. Once mounted, using PWR Road is a breeze. It's a simple twist-head operation to turn light on & off and to scroll through light modes. CHARGE YOUR DEVICES - Press the red button to release the light head, and use the PWR bank to charge your phone, GoPro, cycle computer or other device. Charge your PWR Road using the included micro USB cable. WIDE BEAM & CUSTOMISABLE MODES - PWR Road outputs a max 700 lumens, and can run for up to 195 hours on Eco Flash Mode. Its elliptical beam gives broader, bright road coverage. It comes with 6 pre-program d modes, and you can program the light to suit your needs with Modemaker. You can control brightness, adjust runtimes and add new light modes.   RUNTIME table, th, td { padding: 5px; border-collapse:collapse } table { border-spacing: 2px; } tr { border-bottom: 1pt solid black; } MODE LUMENS RUNTIME Max 700 1.7hrs Mid 360 3.4hrs Stamina 70 20hrs Pulse 650 7hrs Strobe Flash 275 10hrs Eco-Flash 70 165hrs   SPECIFICATION Dimensions - H: 128mm x W: 31mm x L:31mm. Weight - 125 grams. Lumens - 700.   INSTRUCTIONS Connect lighthead to PWR bank:Insert the two lighthead plug pins into the battery. When connected, your lightheads LED's will flash. Connect lighthead to sidemount:Slide the mount into the slot on the side of the battery. Then tighten the thumbwheel. To remove the mount you will need to loosen the thumbwheel. Operation:Once the lighthead and battery are connected, twist the lighthead and hold to turn on, twist and release to change modes.