1. Design: The hygrometer has a round dial shape that is easy to install in various storage boxes. Each is equipped with a rubber ring on the back, which can be directly embedded in the reserved hole in the holder to conveniently view the humidity inside the cabinet. 2. Material: The hygrometer is made of high-quality metal and glass material, elegant and exquisite, compact and practical. The humidity box is made of moisturizing cotton material from PV and polymer, which quickly absorbs water and has an even strong water retention. 3. Features of the cigar hygrometer: The cigar humidor hygrometer can be used to measure the humidity of cigars and effectively record the cigar status. It provides favorable conditions for the mature fermentation process of cigars. The humidity error is +/- 5% and is an accurate and sensitive meter for you to use. 4. Durable: These mechanical round hygrometers are made of high-quality alloy material, are durable and corrosion-resistant, not easy to break. The pointer is very stable, so you can use them for a long time. 5. Mechanical movement: Our round analog hygrometer contains a mechanical movement that does not require batteries. Therefore, the battery does not need to be replaced. This is very practical.