Quickly remove the fogging on the camera lens or telescope in low temperature and high humidity environment.
Enables efficient heat transfer and good heat preservation effect, through heating to prevent lens form fogging.
Fixed by hook and loop fastener, the belt can fit the lens size, and allows for easy removing and adjustment.
The wore can withstand low temperatures, and will not freeze hard after long-term use in a high-cold environment.
All-in-one design, external USB power supply, convenient storage, avoid loss, and convenient for outdoor use.