1Pcs Round Valve Cap LED Light Wheel Tyre Lamp for Car Motorbike Bike YS

For the price you've got to expect poor quality. It works though, just about. Doesn't stay screwed on for long though.

The blinker stays on when the wheel is not spinning. The battery died within a week. Wont buy again

Once it lights it keeps going but it doesn't start that fast Unfortunately

Haven't tried yet but let's see later