Retrospec Bicycles Bub-5 Ultra Bright 5 LED Urban Commuter Bike Light 6 Ultra bright White/Red LEDs with six high-tech flashing modes Rounded design enables up to 1 mile and 220 degree light range and runs up to 100 hours on 2 included AAA batteries Waterproof Body also includes Handle Bar Mount and Seat Post Mount Easily snaps off of mount for safe storage when not riding High intensity flashing taillight with 6 light modes (steady, 2 strobe and 3 chasing modes)