LED bicycle wheel valve lamp, suitable for Dunlop / Schrader, battery operated, (batteries included 3xLR54), 2-pack, Red

Attached to a bicycle, motorcycle or car valve. Shines when driving. Fits a standard bicycle and car valves.
One bulb weight: 18g.
Included 6xLR54 batteries.

Wheel Light.
The light will be off when the vehicle stops. On when it runs and flash when you're driving at night.