The Lezyne Laser Drive Rear 250 lights' laser-mode beams two safety strips on the ground. Light and durable co-moulded lens/body construction. Waterproof. Unique aero and round post compatible design. The Laser Drive rear bike light provides up to 250 lumens and multiple output/flash modes. Extended lens for 180 degrees of visibility. Convenient Micro-USB rechargeable design.