Specialized latest to-see-by headlight, the Flash 500 brings Flux-style beam control to a more budget-friendly price point. The Flash headlight combines a clean, compact design with a simple-yet-elegant silicone strap that reminds us of a watchband design from Specialized Friends in Cupertino. With two different-sized straps included, you can dial in just the right amount of stretch to keep the Flash secure, while ensuring super-fast install and removal. Now you see it, now you don't. Thanks to its 1400mAh battery pack, the Flash 500 will deliver 500 lumens for 2 hours, all the way up to 125 lumens for 8 hours. 250 lumens of Flash mode gives you a whopping 16 hours of runtime. Features Single-LED oval beam pattern gives a perfect blend of spot and peripheral visibility. CREE XP-G3 LED delivers big-time lumens. Class-leading 1400mAh rechargeable Li-ion battery pack to back up those lumens with real-world usable runtimes. Micro USB cable included. Installs in seconds with a silicone strap system. Just pull the strap under the handlebar and drop it into the slot on the light body. Includes two different-sized straps to fit every round handlebar cockpit. (Flash headlights are not suitable for aero handlebars.) Extra bright side lights to give you 180-degree visibility to other cyclists and motorists. IPX7 waterproof means this light will be there when you need it, even in the hardest rain. Steady High mode: 500 lumens for 2:00 hours Steady Medium mode: 250 lumens for 4:00 hours Steady Low mode: 125 lumens for 8:00 hours Flash mode: 250 lumens for 16:00 hours