Amazon.com : Duracell 309/393 Silver Oxide Button Battery, 1 Count Pack, 309/393 1.5 Volt Battery, Long-Lasting for Watches, Medical Devices, Calculators, and More : Calculator Accessories : Health & Household
Always in Stock - Energizer 393 Button cell batteries, 1.5 V, 5/pack (Eveready # ) from Cole-Parmer