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 Driver's Seat And The Passenger'S 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- 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- Fan (Including Usb Data Cable) 2 * Adjustable Brackets Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.