Duracell 389/390 Watch Battery (SR1130W) Silver Oxide 1.55V (1 PC). With a long-lasting charge that requires fewer recharges, Duracell Specialty and Rechargeable batteries really do set themselves apart from the rest.
389 Silver Oxide Button Cell Battery | Battery Mart
Amazon.com: Energizer Varta V389 Watch Coin Cell Battery from : Health & Household
Amazon.com: Duracell 389/390 Silver Oxide Button Battery, 1 Count Pack, 389/390 1.5 Volt Battery, Long-Lasting for Watches, Medical Devices, Calculators, and More : Health & Household