This is a Hornady known as the Rechargable Dehumidifier, model 95900.
Absorb humidity and prevent rust or mildew in gun safes or other enclosed areas. Moisture-control crystals change color when unit needs recharging. Recharge by plugging into 110V electrical outlet.
Features:
Prevent Rust and Mildew
Moisture-control crystals change color when unit needs recharging
