Planet Bike 1/2 Watt

Nichia’s 1/2 watt Blaze™ LED
QuickCamTM bracket mounts, adjusts or removes in seconds without tools
Helmet mount included
Flashing and steady modes
Intense flashing mode is highly visible, even in daylight
Up to 100 hours of run time on 2 AA batteries (included)
45 Lumens
weighs 117 grams with batteries