Energizer 377 Watch Battery This Energizer 377 Battery is perfect for keeping your watch, calculator, glucose monitor or other 337 battery powered device going. It uses a silver oxide chemical system to be long lasting and effectively power your devices. Energizer A76 Battery 4pk The Energizer A76 Battery is high performance and long lasting. It is ideal for calculators, watches, scales and toys. Energizer CR1632 Battery This Energizer CR1632 Battery is perfect for powering your glucose and heart rate monitor, keyless entry, toys, games and more. It can hold power in storage for up to 8 years making it a durable and long lasting option.