Jiuyue valve stem light screws onto the bicycle wheel valve and lights up from vibration while spinning, creating a glowing wheel effect.
- Material: half aluminum, half plastic
- Power: 3× AG10 button cells (included)
- Lights up only while moving; stays off when stationary
Before first use, unscrew the back cover and remove the battery insulating film, observing correct polarity.








Brand:
Jiuyue
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