While it is a legal requirement for all motorized vehicles to have safety lights fitted and displayed during the hours of darkness. It is pure common sense to have lights fitted for your bike too. They are essential for improving safety for cycling. The Solar Powered 2 LED Bicycle Rear Safety Blinker uses clean & renewable solar power for self-recharging during the day. Built using high quality weather sealed components for all weather riding and long lasting low power consumption LEDs for 8 hours of usage life in strobe mode. This Solar Powered 2 LED Bicycle Rear Safety Blinker is clean and environment friendly safety companion for your bike.