Specifications: 1. Voltage: 3v 2. Capacitor 220mah 3. Current recommended: 0.1ma 4. Current recommended (interrupt): 5ma 5. Diameter 20mm high: 3.2mm 7. High capacitor, low self-discharge current, discharges stability during work. 8. Battery of environmental protection. Performance and test conditions - unless otherwise stated, all the testing is carried out under the condition - environmental temperature: 20°c-25°c - environmental humidity: 65±20%