Varta Battery Watch 377 SR66 - Lot Of 10 4008496245932 | eBay
Amazon.com: Tenergy 1.5 Volt Battery Button Cell LR41, ag3 Batteries Equivalent, Ideal for thermometers, Watches, Laser Pointers, Small Toys, Portable Electronics, and More - 20 Pack : Health & Household
SR41 and LR41 Battery Equivalents and Replacements