Retrospec Bicycles Amsterdam-5 Ultra Bright 5 LED Urban Commuter Bike Headlight and Taillight Combo, Silver 5 Ultra bright White/Red LEDs make this light one of the brightest affordable compact bike safety lights Unique design enables up to 1 mile and 220 degree light range and runs up to 100 hours on 2 included AAA batteries Durable and waterproof construction, easy to mount and assemble Convenient power source uses AAA batteries (included) Long life LED light bulbs of up to 60 to 100 hours, compact and affordable