An ultra low profile wearable LED with amazing brightness. QC TESTING: To underline their quality and reliability, Cateye products undergo the most stringent QC tests in the industry, many of which exceed the requirements of CE. Also used in the Japanese auto industry, Cateye's testing equates to a return rate of less than 0.9% across the brand. OPTICUBE LENS TECHNOLOGY: Cateye maximise the best beam pattern from any LED, utilising superior lens and reflector technology to emit a higher quality light and beam pattern in front of the rider, even with lower Lumen amounts. LONG PRESS TO TURN ON & OFF: A feature appreciated by consumers to prevent accidentally switching on lights and loosing battery power. This feature also ensures that a light is not accidentally turned off during a ride. INTEGRAL HEAT DISSIPATION: Superior heat dissipation maximises the lumen power of the light for consistency of lumen output. NEVER CYCLES THROUGH THE OFF MODE: Cateye were the first to introduce this feature, to avoid the rider being accidentally left in complete darkness while changing beam modes. REAR LIGHT FEATURES: True 180 degree visibility; battery auto-save, automatically changing to flashing mode to allow more time to finish the ride as opposed to being left in the dark.