Ravemen PR1400 USB Rechargeable DuaLens Front Light with Remote in Grey/Black (1400 Lumens) Ravemen Lighting. Ravemen's origins stem from their genuine passion for cycling and their deep concern for the safety of fellow cyclists and other road users. With diverse backgrounds within the bicycle industry and a shared love for biking, engaging in night rides is a common practice for them. Unfortunately, they have observed that a significant portion of high-output bike lights available in the market lack anti-glare functionality, posing a substantial hazard to oncoming traffic and thereby endangering their safety. Indeed, many individuals have encountered the blinding effects of high lumen bike lights. Ravemen, as a company, firmly believes that every cyclist should aim to enjoy their ride without causing inconvenience to others. This belief, combined with inspiration drawn from automotive headlights, sparked the idea of adapting a similar design to bike lights. Throughout the entire process of conceptualization, design, prototyping, testing, and refinement, they persevered and successfully achieved their goal. Consequently, they produced the world's first bike light designed to simulate automotive headlights. By melding high-quality, durable materials with innovative design elements and their inherent commitment to rider and public safety, Ravemen products are not only dependable and user-friendly, enhancing your cycling experience, but also serve as a trusted companion that garners respect from others. DuaLens Optical Design for road biking mode, providing broad closed range flood light with anti-glare low beam for commuting, no dazzle and glare for oncoming traffic HiLo Beam System for Mountain Biking and Emergency Modes, providing illuminating light similar to automotive headlight with far reaching high beam and low beam Intelligent Memory circuit remembers the last used brightness level and mode when turned on again LED real-time display to show remaining runtime in each brightness level Micro USB charging port, compatible with most phone chargers USB output port to charge other USB-powered digital devices Intelligent thermal management circuit to prevent overheat of LEDs Quick release design for easily slide in and out Compatible with handlebar from 22.2mm to 31.8mm diameter 21 hours run time Max 1400 lumens, 3 modes and 9 brightness levels for various riding environments Technical Spec LED: 2*high efficiency white LEDs Battery: 5200mAh/3.7V rechargeable Lithium-ion battery Dimensions (Headlight): 100mm (L)*48mm (W)*27mm (H); Weight (Headlight): 209g Materials: The front and main body is made by aluminium with Mil Type III Hard Coat Anodizing; the rear part and the handlebar mount are made by durable plastic Package includes: front light, handlebar mount, thick silicone shim, thin silicone shim, USB cable, wired remote button, 2 x O-rings