CR2025Lithium button cells are commonly used in car security (car alarm / keyfob batteries), organizer (backup battery for PDA ), glucometer, camera, electric thermometer, calculator, computer equipment (CMOS memory backup battery ), toys, communication equipment, electronic watches / clocks, card radios, data pack for video camera.other specifications:CR927,CR1025,CR1216,CR1220,CR1225,CR1616,CR1620,CR2016,CR2025,CR2430,CR2450,CR2477