The product is designed to be fixed on both sides to prevent bumpy movement during use; Attach to the appropriate position on the backrest of the car seat to secure it. After power on, press the power button to use it.
There are three levels of fan gear: low, medium, high, and a total of three levels; Short press the button to switch gears: "1st, 2nd, 3rd, shutdown" cycle in sequence. Fan speed 1st gear: 3000RPM; 2nd gear: 3800RPM; 3rd gear: 4500RPM Fan speed 1st gear: 2.6m/s; 2nd gear: 4.0m/s; 3rd gear: 5.1m/s