Planet Bike Blaze 1W Superflash Set Blaze features: high and low power beam along with Superflash flashing mode Up to 20 hours of run time on 2 AA batteries (included) Superflash features: Half-watt Blaze LED plus 2 extreme LEDs for visibility up to 1 mile Unique, eye-catching flash pattern Up to 100 hours of run time on 2 AAA batteries included