Boriva 4 pcs LED Car Door Light Wireless Magnetic Induction Strobe Flashing Anti Rear-end Collision Car Door Opening Warning Lamps Car Fancy Lights (Red) Car Fancy Lights  (Red)

LONG BATTERY LIFE: *you have to keep the battery in green circuit board* ar door flash light The product is the use of CR2032 button battery (The Battery is Included), through testing, at normal operating condition, you can use 1-1.5 years, screw cap design, can replace the battery easily car magnetic light .car light accessories. Universal fir for all cars, Led activates when car door open, act as warning signal for upcoming vehicles.