Renata 377 SR626SW Watch Battery 1.55V Silver Oxide | Low Drain Button Cell for Wrist Watches & Small Devices | Long-Lasting Power | Replaces 377, AG4, SR66, D377, V377. WIDE COMPATIBILITY – Replaces multiple models including 377, SR626SW, AG4, SR66, D377, GP77A, and V377.
eBay