1、Turn up from the bottom, press the switch to use (adjustable 3 files), built-in lithium battery, use the USB interface to charge. 2、Three-speed air regulation can meet different requirements, and low speed/medium speed/high speed can be continuously operated for 3/2/1 hours respectively. 3、It takes about 2 hours from 0 to 100% charge. 4、Mini body, easy to store and manage, convenient to carry. 5、Helps cool the air inside the car, avoiding sultry heat and bringing a pleasant driving mood. Features: Turn up from the bottom, press the switch to use (adjustable 3 files), built-in lithium battery, use the USB interface to charge. Three-speed air regulation can meet different requirements, and low speed/medium speed/high speed can be continuously operated for 3/2/1 hours respectively. It takes about 2 hours from 0 to 100% charge. Mini body, easy to store and manage, convenient to carry. Helps cool the air inside the car, avoiding sultry heat and bringing a pleasant driving mood. Specification: Condition: 100% Brand New Material: ABS Color: Beige/Black (optional) Packing: kraft paper box Size: 13.5*3.2*4cm/5.3*1.3*1.6in Installation steps: Put the hook on the headrest bar and lock it (if the headrest bar is too small, EVA gasket can be used). Package List: 1 * Fan Hook 1 * Charging Cable 1 * Flexible Glue Note: Please allow slight dimension difference due to different manual measurement. Thanks for your understanding!