Remove moisture in any enclosed space, like your gun cabinet or safe, with Remington's Mini Dehumidifier. Uses colorless, odorless nontoxic Water Glass crystals to constantly absorb moisture from the air. Every 30-60 days, the indicator window will turn pink when the unit needs regeneration. Simply plug it in to a standard electrical outlet for 10-12 hours, and the indicator window will turn blue when it's recharged and ready to go again. The average life span is approximately 10 years.Specifications and Features: Protects up to 60 days before recharging is necessary Self contained unit requires no wiring or extension cords Indicator window lets consumer know when to recharge Recharges easily in only a few hours Compact unit attracts and holds moisture through water crystal technology to protect gun safes and cabinets Releases moisture trapped in water crystals.