The XIKAR Rectangular Digital Hygrometer, measuring 2″ H x 3.25″ W x 0.375″ D, is a precise tool for monitoring humidity in your humidor. It features a min/max function that records the lowest and highest humidity levels since the last reset or for the life of the LR1130 button cell battery. With a refresh rate of 10 seconds, this PuroTemp Hygrometer provides real-time updates. Redesigned for immediate accuracy without the need for calibration, it ensures optimal conditions for your cigars straight from the box.