The compact yet powerful Topeak Race combo bike light set offers front and rear protection on the commute or city bike ride. Both the Topeak Whitelite front and Redlite rear bike lights are very lightweight and come with constant as well as flashing bike modes. Long burntimes mean you dont have to switch batteries (included) often. Whitelite Race Compact and powerful front light provides ample light for commuting Lamp 2 Super Bright White LED's Battery CR2032 x2 (included) Burn Time: (approx) 70 hrs / 140 hrs Simple rubber strap mounting system. Blinking or constant functions 7x3.8x3.6cm 35.4g Redlite Race Compact and powerful tail light provides excellent visibility in any situation. Mounts to post or seatstay Lamp: 2 Super Bright Red LED's Battery: CR2032 x2 (included) Burn Time: (approx) 70 hrs / 100 hrs Blinking or constant functions 7x3.6x3.8cm 37.6g