They turn from yellow to white when fully spent.
Audinell Hearing Aid Drying Box – 1 Large Drying Capsule 63 mm with Colour Indicator – for Approx. 3 Months – Drying Cup for Sails and Hearing Aids
Hearing Aid Drying Capsules Cochlear Implant Hearing Aid Cleaning Wire Accessories Orange Desiccant for Hearing Aid Drying Pot for Phonak, Unitron and Starkey Charger Case,4Pcs
Audinell PerfectDry Q.R. - Electronic Hearing Aid Drying Box - Fast 45 min - With Fan - Dehumidifier and Drying Box Hearing Aid - Eliminates Sweat and
SOESFOUFU Hearing Aid Drying Case: Hearing Aid Dehumidifier Moisture Proof Case - Drying Cup for Sound Amplifiers, Preventing Humidity, Dust, and Impacts, White
SOESFOUFU Hearing Aid Drying Case: Hearing Aid Dehumidifier Moisture Proof Case - Drying Cup for Sound Amplifiers, Preventing Humidity, Dust, White (Hole)
