Cateye TL SL100 Compact Safety Rear Light

This is a compact LED safety light that is an ideal back up for cycling and can be mounted almost anywhere from the seatpost of your bike to your rucksack or even directly to your body.
It has 2 small, yet very bright LEDs, in its compact and totally waterproof casing, that are activated by the toggle at the end of the elasticated cord and the 3 seperate modes are activated by tapping the LEDs side.
It has a run time of 30 hours constant, 90 hours flashing or 140 hours alternating flashing.