Amazon.com: Energizer 393/309 Silver Oxide Battery : Health & Household
393 Energizer Battery Replacement Cells
20 Renata 393 Button Cell watch battery
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
Energizer 393/309 Silver Oxide Button Cell, 1.55V High Drain - ea (5 p — PLP Battery Supply