MetroFlash Blinky "5" 5-Led Rear Bicycle Light Easy to mount: clips to seat post, or your clothing Ultra-compact case is weatherproof, lightweight, and durable MetroFlash Blinky Bicycle Light with included seatpost mount. Five super-bright red eXtreme LEDs and a built-in parabolic reflector provide visibility for up to one mile Flashing Chasing and steady modes with up to 200 hours of run time on two AAA batteries