Features:

• Fights Dampness & humidity for an enclosed volume of 500 cubic Feet
• Works w/Silica Gel: No batteries or plug-in power needed (while operating)
• Renewable by plugging in wall AC outletto recharge crystals
• Silently operates for up to 2 months before needing recharge (Depending on the humidity in the environment)
• Spill- & Mess-free, non toxic, and child- & pet-safe