BRIGHTNESS: Front light has 1 x high performance LED and the rear light 3 x SMD LEDs. This set is visible up to 600 metres. MODES: The front light has 2 functions of constant (run time of 70 hrs) and flashing (run time of 140 hrs). The rear has 3 functions of constant (run time 80 hrs), flashing (run time 160 hrs) and rotary flashing (run time 260 hrs). USAGE: They come with a mounting bracket for ease of use to attach/detach to the bike. BATTERY: 2 X AAA batteries are supplied per light, just pull the plastic tab out from the lights WATER RESISTANT: This light set will have protection from water
