Hi, thanks for looking!
The manufacturers details are listed below:


Specially Designed Radiator - KIWI design USB radiator fans are specially designed for Valve Index, which can minimize the heat generated by VR equipment, keep the player in a cool gaming environment, and ensure the service life of the Valve Index headset


Quiet & Soft - USB radiator fans specially designed for Valve Index are very quiet during work, which does not produce very loud sounds and does not affect your gaming experience, and makes you comfortable to participate in VR games HIGHLY MATCHED APPEARANCE - Valve Index radiator has a concise and beautiful appearance, which is coordinated and integrated with VR equipment and matches the index valve perfectly EASY TO INSTALL AND REMOVE - The radiator is easy to install and remove, just insert the USB connector into the VR headset and click the radiator switch to use.
What you get - 1 x USB radiator fan and 1 x user manual.
Any questions just send a message, thank you.