Super fresh genuine Renata 321 1.55v batteries. Works in: Garage door openers, home security systems, Remote control devices, lighters, electronic door locks, and automotive keychain remotes, radio devices, keyless vehicle entry systems, Bluetooth headsets, Photo Micro Lites, Motherboards, CMOS, Dreamcast VMUs, PocketStations, AbTronics, Watches, Cameras, Calculators, Electronic Dictionaries, and other devices. Equivalent to: SR616SW, SR65, SR616, SB-AF/DF, 280-73, DA, V321 , D321, GP321, 611, 321, SR618, 321A, 321X, SB-AF, E321,