2x 5PK Maxell Silver Oxide SR1136SW Low Drain Watch Battery Replaces 1133SO, 218, 242, 280-05, 343, 344, 350, 509, 529, 604, D344, D350, MR1136, MR42
This battery is a Silver-Oxide cell normally used in watches, with a shelf life of 5+ years. Other applications may include calculators, film cameras, medical instruments, cash registers, or FA instruments (measuring instruments, onboard microcomputers, sensors). Low drain batteries are best used in devices that use a small amount of power over a long period of time: Analog watches, TV remotes, alarm clocks, etc. This is in comparison to high drain batteries, which are for devices with a continuous, low power use and occasional high peaks: Analog and digital watches with extra functions (backlight, alarm), pocket calculators, electronic games, cameras
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