Features: *Small and classy,good looking mini car air conditioner vest clock *Quartz movement,luminous pointer *Diameter:1.7'',Shock proof,vibration proof. *With adhesive glue on the back,this clock can be installed in anywhere your want such as office,car dashboard,workbench,or locker. Specification: Type:Car Air Vent Quartz Clock Material:Plated metal Battery:Built-in button battery Battery Life:About 1 year Waterproof:No Item Size:4.3*1cm /1.7*0.4'' (D*H) Net Weight:35g/1.2oz