Never have to wonder if your digital hygrometer is accurate again.
Battery Included (G13A Micro Cell 1.5 V Alkaline Button Cell)
Three Black Button on the Back for Calibration (C = Reset, + = Max/Min, - = C and F)
Approx. Dimensions: 3.4 inches (Length) x 1.95 inches (Width) x 0.3 inches (Thickness); Approx. Weight: 0.125 pounds
Can be Easily Attached to Any Cigar Humidor