The Serene Renew Hearing Aid Dryer and Freshener uses gentle dry heat to remove moisture and condensation. A powerful UV light inhibits bacteria growth that can cause itchy ears. It’s environmentally friendly. Features: Uses dry heat to remove moisture Powerful UV light inhibits bacteria growth Simple one-touch operation Built-in battery tester Accommodates up to 2 pairs of hearing aids or cochlear implant processors Compact and lightweight Great for use at home or while on the road Uses AC power (adapter included) One year warranty