CR1216 CR1220 CR1616 CR1620 CR1632 
3V button battery
Maxell Authorized Sales Company
Maxell genuine battery
Application scope: real-time clock, backup memory power supply, various measuring instruments and meters, mobile communication, office equipment, household appliances, information equipment and other electronic products, as well as backup power supply for clock functions
(Mobile phone, PHS, cordless phone, pager, memory card, fax machine, computer, camera, digital camera, tuner, portable terminal equipment, PDA, etc.)