Princeton Tec Swerve Rear Bike Light - $17.93

The Princeton Tec Swerve rear bike light uses 2 high-powered LEDs and alternating beam patterns, resulting in a very high level of visibility. A combination of a diffused lens and a collimated focused lens creates a very bright 180deg beam pattern that alternates between a wide beam and a narrow beam. Because the eyes must juggle these 2 beams, they don't relax and therefore, the light always remains highly visible. 2 lighting modes: flash pattern or a steady light. On/off toggle switch extends beyond the perimeter of the light for easy use while on the bike. Abundant mounting options: handlebar, seatpost, seatstay and fork mounts are included; plus, the built-in clip allows for attachment to your helmet, pack or messenger bag. Swerve is resistant to heavy rain, heavy splashes and even the occasional dunking. Light output equivalent to 7 lumens. Includes 2 AAA batteries. - $17.93