The Entity RLS030 Rear Light might come in a small package but it surely packs a punch. The 30 lumens are blasted throughout a 180 degree range of visibility from the 10 Chip COB LED. Then add the benefit of an automatic movement/brake sensor that will help warn rearward traffic of your movements. The RLS030’s compact, unobtrusive body and long-lasting battery make it the ideal light to keep on your bike to light you up at night or during long day rides.Steady and flashing modes let you tailor the light function considering your ride duration and road conditions. A simple double click changes between the steady or flashing modes. While in flashing mode, if the light senses a sudden reduction in speed, it will stop flashing and light up solid.The RLS030 includes a low battery indicator light and quickly reaches a full charge in just 3 hours.The angle-adjustable rubber clamp easily mounts frame tubes or seat post, even aero shaped posts! The light can be oriented vertically or horizontally on both the rubber strap mount and on the included bag clip. Boasting IPX4 waterproof rating and USB recharging, the RLS030 is an accessory that will increase your visibility.Features: Sensors that detect and indicate braking movements. 30 Lumens Side Visibility - 180 degree beam Waterproof IPX4 USB Rechargeable 10 Chip COB LED Low Battery Indicators Tool Free Installation Battery fully charges in 3 hours