Blackburn: HIGH LUMENS DIGITAL GAUGE LIGHT Mountain Biking at night can be a magical experience that transforms your familiar trails into an entirely different world. We seek to keep that magic alive by making sure you know exactly how much battery life is left, so that you arent stuck in the dark with a dead light. The countdown 1600 has an easy to read back-lit display that tells you exactly how many minutes of light remains in each of the 6 power modes. 1600 LUMENS OF OFF ROAD POWERCOUNTDOWN LOGIC - This light features a super bright Blitz mode, plus High, Medium, Low, Pulse and Strobe modes. A back-lit display counts down minutes of battery life remaining, according to each mode. When the light is on, push the power button quickly to toggle between the current mode and Blitz mode. Hold the power button to turn off in any mode, and the light remembers this mode when turning back on. To lock/unlock powere button, with the light powered off, hold down both left and right arrow buttons for 2 seconds. IP-67 WATERPROOFIngress protection rating or IP Rating, is a techy way to describe the level of water and dust proofness a product has. This light meets the IP-67 Standard, which means is totally protected against dust/grit and is fully protected against the effects of immersion between 15cm and 1 meter for 30 minutes. OFF ROAD MOUNT Designed to be extremely steady and robust, yet sleek enough not to take up all the real estate on your handlebar. Quickly installs using aluminium thumb screw on bar sizes from 22.2 to 35mm. EXCELLENT SIDE VISIBILITY Built in design features channel a bright hit of light to each side providing visibility to cross traffic. FAST CHARGE Fully charges in 4 hours with a Micro-USB 2.0 port and 8 hours with a Micro-USB 1.0 port. ALUMINIUM CONSTRUCTION A lightweight and tough material for extra durability and a timeless look. • Charging cable included• No tools required• Lithium ion battery• 240 grams