SUPER FRESH AND LEAK FREE- LOOPACELL Brand high quality 377 Button batteries. 5 Pcs are sealed in a card so batteries do not touch each other as they drain. EQUIVALENT TO - Many other brands like SR626SW, SR626, LR626, L626, S626E, SR66, LR66, V377, D377, GP377, 377, 377A, G4A, G4, SG4, 376, 606, 565, 177, GP77 and more. WARRANTIED All LOOPACELL brand batteries are 100% guaranteed to be of the best quality!! We offer a 7 year quality warranty. This makes your purchase totally risk free. 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 377 Watch Battery The Loopacell silver oxide 0% Mercury battery will definitely get your watch running without the hassle of having to change your battery often.