AmVolt LR44 AG13 A76 Battery - [Ultra Power] Premium Alkaline 1.5 Volt Non Rechargeable Round Button Cell Batteries for Watches Clocks Remotes Games Controllers Toys & Electronic Devices (15 Count) : Amazon.ca:
What is an LR44 battery?
LR44 Lithium Battery Equivalents
GutAlkaLi LR44 1.5V Alkaline Button Coin Cell Batteries - Pack of 10 for Many Small Electronics, Including Watches, Calculators, and Toys - Compatible with AG13, 357, 303, SR44, and A76 Battery.: Amazon.co.uk:
What's the difference between LR44 and AG13 batteries? - Quora