Works in: Watches, computer motherboards, calculators, PDAs, electronic organizers, garage door openers, toys, games, door chimes, pet collars, LED lights, sporting goods, pedometers, calorie counters, stopwatches and medical devices. Equivalent to: 337, SR416SW, V337, GP337, SB-A5, 280-75, D337, LR416, 337A, 337X, SP337, E337,