The front and rear light set consisting of the White Lite II and Red Lite II lights is the basis for safe night driving. It's small and lightweight so you can take it with you everywhere. Code TMS037 TOPEAK bike light WHITE LITE II Rear bike light RedLite II Light: 4 Red LEDs Battery: CR2032 (2) (included) Light modes: constant / flashing Light duration: 60/100 hours Mounting: saddle tube, Topeak pannier Size (L x W x H): 5,4 x 5,5 x 2,2 cm Weight: 20 g