20 fresh genuine Loopacell 377 Silver Oxide 1.55v batteries new packaging that guarantees authenticity, Works for: Laser Pointer Insulin Pumps, Heart Rate Monitor, toys ,Watches, Cameras, Calculators, Car Security Alarm, Keyless Car Remotes, Organizers, Computer Equipment (memory backup battery) CMOS, and all other devices that requires this battery size Equivalent to: SR626SW, SR626, LR626, L626, S626E, SR66, LR66, V377, D377, GP377, 377, 377A, G4A, G4, SG4, 376, 606, 565, 177, GP77,