Powerful 800 lumen brightness.Cycling Tuned Optics(TM) throws a long range, extra wide beam for road and mountain biking.Daytime visible flashes keeps you highly visible.Experience the best battery life ever on the most powerful bicycle light series of its kind.Supercharged 2:30 to 160 hour run time.Default brightness settings can be fine tuned for longer run times.Ultra high capacity battery with advanced microcontrollers.8-step battery fuel gauge for full time battery awareness.USB-C rechargeable.Ultra sleek anodized aluminum alloy strikes the perfect balance of brightness, ruggedness, and compact style.Durable and IP67 waterproof for use in all weather conditionsTwo-button design lets you fine tune the brightness and flash speeds to your cycling needs.Top button fine tunes the brightness of brightness modes and the flash speeds for flashing modes.Bottom button scrolls through the different lighting modesExpand run times beyond factory default