Topeak RedLite II Bicycle Tailight

A water resistant, ultra bright 4 LEDs tail light with wrap around lens. Features constant and blinking modes for increased visibility. Lamp: 4 Red LEDs Battery: CR2032 2 IncludedControl: 2 Modes ConstantBlinking Burn Time: approx 60 hrs100 hrs Lamp Housing: Injection Molded Plastic Mount Seatpost, Seatstay, Topeak Bags and racks Size L x W x H 5.4 x 5.5 x 2.2 cm, 2.1 x 2.2 x 0.9Weight: 20 g 0.70 oz light only