Bright things come in small packages with Serfas' Guppy Red taillight. This super light, super bright, inexpensive LED has both steady and flashing modes and a mounting system so versatile that you can mount it any way, anywhere. The entire body lights up for 360-degrees of visibility and the Guppy lasts for up to 120 hours with the included battery!
Run time: 90 hours (Steady) / 120 hours (Flashing)
Includes CR 2032 battery