Good news: More and more devices require less power and thus smaller batteries, specifically button cells. The CR2032 from GP is a lithium button battery with 3 volts and a capacity of 220 mAh. It is particularly suitable for video and photo cameras, calculators, car keys, toys, and medical devices such as blood glucose meters. The diameter of the button cell is 20 mm and it is 3.2 mm thick. This 3-volt button cell from GP, designated CR2032, is a suitable replacement for batteries labeled ECR2032 and DL2032. It performs excellently in a temperature range of -10 °C to +60 °C. Please check the size before purchasing.