Description:Product name: USB Time FanMaterial: metal alloyLength: about 40 cmFan diameter: about 88mmColor: silverNet weight: about 54gHow to use: Connect to a laptop or PC, press the button to turn on the fan. Press and hold for 3 seconds, see the pointer flash, then stop. Press and hold to adjust the time, then stop. Short press to fine tune, then stop. Time setting is complete. (flashes stop after about 6 seconds)Packing list:1 x USB Time Fan1 x Packing BoxNote:1. Due to manual measurement, please allow 1-3cm error. Make sure you don't mind before bidding.2. Due to the difference of different monitors, the picture may not reflect the actual color of the product. Thanks.