1. The Locking Buckle Is Strong And There Is No Abnormal Noise When Driving. There Are Three Gears To Adjust The Tightness. The Gears Can Be Adjusted According To The Size Of The Headrest Rod. 2. From The Back Seat Without Blind Spots, Wide Range/long Distance/strong Power 3. Sold In 2 Sets, Which Can Be Placed Separately For The Drivers Seat And The Passengers Seat, Car Tables, Chairs, Headrest Poles, And Rear Seats 4. Three-speed Circulating Strong Wind, As Fresh And Quiet As A 5. Brush Motor Air Circulation, Strong Wind Speed And Low Noise Name:car Rear Double-head Fan Wind Speed:1-3 Gears Optional Voltage:5v/2a Wire Length:about 180cm Fixed Position:car Table And Chair Headrest Rod Working Power:10w Scope Of Application:rear Row Of Seats Note:different Batches May Have Differences In Product Appearance, Color, And Printed Characters, Which Not Affect The Use Colour:as Shown Material:pp Package Contents: 2 * Car Rear Double-head Fan (including Usb Data Cable) 2 * Adjustable Brackets Only The Above