Lightweight & incredibly portable these tiny magnetic LED Bike Lights are a must for any cyclist. Just 4.5 x 2.5cm when stored together the super-bright front & back bike lights have strong magnets that stick securely to the metal frame of your bike or even to other metal items on bags or clothes. Simply click each light to switch it on or off & to select from steady beam & slow or fast flash. When you have finished just snap the 2 bike lights together & pop into a pocket or bag. Weather-resistant. 2 x CR2032 batteries included. Last for up to 40 hours. Colour may vary (Red Black or White).