Able to emit up to 30 lumens of light & equipped with seven different modes, this rear light is perfect for a variety of low light conditions. Thanks to the composite body, this light is incredibly durable & resistant to water ingress, making it perfect for daily use. It’s also rechargeable too via micro-USB & contains up to 20 hours of run time on a full charge. With an easily adjustable silicone strap, this light is compatible with a variety of seat post types & can be transferred between bikes in seconds. All this performance is packed into a neat 18-gram package to keep the weight as low as possible. 30-lumen output 20-hour maximum run time 38 chips COB LED light 18 grams 7 different modes – Low, high, flashing 1, flashing 2, flashing 3, flashing 4 & daytime flashing USB (Universal Serial Bus) rechargeable Innovative quick release bracket Functions as a helmet clip light Low battery indicator & battery protector IPX4 waterproof standard