This is a "SW" low drain battery.
5PK Maxell Silver Oxide SR716SW Low Drain Watch Battery Replace 315 SR67 V314 The 315, or SR716SW, is a Silver-Oxide cell normally used in watches, with a shelf life of 5+ years.•••. Silver Oxide Watch Battery SR716SW Low Drain Replace 315 SR67, PK 5 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, etc. 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.