Product Review

Specifications:
4 Bright LED bike wheel lights for safety and visibility
Waterproof changing-color safety automatic flashing wheel lights
Energy-efficient: light turns on when moving; off when stopped
No tools required;
Mounts to tire quick;
LED changing-color safety flashing wheel lights
dazzling display
be seen and light up the street underneath you!
Wear them for safety and make your night rides magically lit up!

Note:
Please kindly note there is a piece of paper in the battery case that needs to be removed before use.
Sometimes it still not work when you remove the paper, then you need to put them on the valve stem and ride, they will light up.