Product Type:Car Accessory Colour: Silver Product Material:Aluminium Alloy Stackable: Yes Rated Voltage: 12V Rated Power Input: 0.8W Rated Speed: Negative Ion Concentration: 10，000 Product Size: 8*2.1*2.1cm Product Weight: 30g Usage: Car Air Purification Feature * 1.Minus-ion air purification， recommend use of the area is 3.5㎡. * 2.Negative ion concentration is up to 10，000， effectively purify the air in your car. * 3.Compact and delicate， portable and durable， lower consumption. Package List 1x Air Purify 1x Manual