Features: 1) Activates when car is in motion, at night 2) Shuts off 2 minutes after car stops 3) 3 x AAA batteries, no external power sources are required 4) Laser engraved 5) Does not activate in the daytime or under bright conditions Outer packing: 20pcs/ctn Carton dimensions: 53 x 36 x 20cm Weight: 4.5kg