This Duracell specialty 2016 lithium button cell battery is a reliable battery for use in medical devices such as glucose meters and heart rate monitors, bank card readers and other electronics (watches, clock radios, pedometers and others). This durable CR2016 Lithium battery of 3V with Duralock technology remains charged in the packaging for 10 years. This package contains 2 Duracell 2016 lithium button cell batteries of 3V.