2.8 inch Bicycle Computer Wireless Bike Headlight Rainproof Speedometer Odometer

(Application:Bicycle,Tricycle. Model:Wired,Wireless. -SMART CHIP ,STABLE PERFORMANCE. WIRELESS TYPE ). Magnet is fixed by screw. The distance between magnet and launcher should be 1.5~5mm. The head of magnet should be aligned with the upper or lower ends of the launcher.

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