Cool Led Bike Spoke Lights - DAWAY A12 Bright Bicycle Wheel Light (1 Pack), Safety Bike Tire Lights for Kids Boys Girls Men Women, Burning Man, Xmas, Birthday Gift, Fun Accessory, Waterproof

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Auto Open & Close, with Manual Switch - When battery was placed, the light flashed briefly, then went out.

Long press switch for 2 seconds, enter auto mode.

Then light glows when bike moves, turns off after stop moving for 30 seconds.

Manual Mode: Just long press button to turn on/off the lights.

Different Riding Speed, Different Pattern Effect Shown! Fun Pattern Effects!