The Rechargeable Dehumidifier is perfect for keeping moisture out of your safe or gun room. This compact unit features water glass crystals that absorb moisture and has a window that indicates when it's time to recharge. Plugging it into any wall outlet will quickly and easily recharge the cyrstals-so it's ready to use again and again. And because it doesn't require constant power, you can put it in hard-to-reach areas. Protects up to 333 cubic feet Water glass crystals absorb more moisture, are odorless, non-toxic and will not release moisture back into the air Compact design fits nearly anywhere Indicator window shows when unit needs recharging Includes charging cord and recharges in about 12 hours 8.5x6x2.5"d. Order today!