Protect the investments in your gun safe, Closets, pantries or other enclosed spaces from damaging humidity, rust and mildew with a rechargeable gun safe dehumidifier from SnapSafe. This is a medium sized compact dehumidifier that removes moisture from surrounding air in an enclosed area of up to 333 cubic feet. The moisture-control crystals inside the unit change from orange to green when the unit needs to be recharged. To dry out and recharge the crystals, simply plug it into any 110V electrical outlet until crystals turn orange again. Perfect for anywhere you're concerned about the damaging effects of humidity and moisture in the air. Take care of your equipment and it will take care of you. Make sure you have a SnapSafe rechargeable gun safe dehumidifier! features: - SnapSafe rechargeable gun safe dehumidifier medium - color change moisture crystals orange to green indicates recharge required specifications: - 110 volt recharge capable - dimensions: 6-" x 4" x 1-1/4" - effective in spaces up to 333 cubic feet..