The Silver Digital Cigar Hygrometer with Thermometer provides accurate readings of both temperature and humidity levels. It also has a Celcius/Farenheit switch and a nice, big display so you can easily read your humidity levels. This is an absolute must have for any cigar aficionado who wants to keep their cigars in the best possible environment. Monitoring your humidity levels is crucial for keeping those stogies nice and fresh. It mounts with a double sided velcro and tape system that allows easy on and off removal.