Fit to the device models:Casio DT-X10, DT-X5, DT-X5M10E, DT-X5M10R, DT-X5M30E, DT-X5M30R, DT-X5M30U, DT5023BAT, HA-A20BAT, DT-950. Compatible with the battery part numbers:DT-5023BAT, DT-5024LBAT, CA50601-1000, 1UF103450, 1UF103450P-OS2, 20-36098-01, 21-52319-01, 21-56383-01, 21-58236-01, 6140-01-499-7364, NSN6140-01-499-7364.