Murata acquired the high quality Japanese battery manufacturing company Sony who is known for producing batteries with high performance and reliability in 2019. This acquisition gives Murata the advantage of gaining over 40 years of battery technology development and manufacturing expertise. These Murata CR2032 batteries are the perfect long lasting replacement for all your personal devices including car keyfobs watches cameras small medical devices blood glucose monitors remote controls digital thermometers electronic toys memory backup calculators and much more.