Brand: Maxell. MPN: SR726SW. 5PK Maxell Silver Oxide SR726SW Low Drain Watch Battery Replaces 397 10L102 D397 D396 BS26 SP397 SG2 8033 W2U The 397 or SR726SW is a rare 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). This is a SW low drain battery. 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 etc.5PK Maxell Silver Oxide SR726SW Low Drain Watch Battery Specifications Chemistry: Silver Oxide Nominal Voltage: 1.55V Nominal Capacity: 33mAh Nominal Discharge Current: 50 (?A) Diameter: 7.9 mm Height: 2.6 mm Weight: 0.5(g)5PK Maxell Silver Oxide SR726SW Low Drain Watch Battery Features Flat discharge characteristics A flat discharge curve during discharge supplies a stable voltage until the end of the discharge life. High-energy density High-energy density per unit volume provides approx. twice as the amount of energy capacity as button-type alkaline batteries. Excellent discharge load characteristics Employing an alkaline electrolyte the SR battery features excellent discharge load characteristics. Depending on the composition of the electrolytes two models are available; a low-drain type for analog watches and a high-drain type for multi-function watches incorporating an alarm illumination light etc. Superior leakage* resistance Featuring 5PK Maxell s original leak-resistant processing the SR battery has excellent leakage resistance which suppresses the electrolyte from rising up and seeping out ? a basic phenomenon of alkaline electrolytes. 5PK Maxell Silver Oxide SR726SW Low Drain Watch Battery Also Known As: Beltone BS26 607 Citizen 280-28 Duracell 10L102 D397 D396 Energizer BSR59L B-SR59L Eveready 397 Gold Peak GP97 I.E.C. SR59 JIS GS2 5PK Maxell SR726W NEDA 1164SO Panasonic SP397 SR726SW Rayovac 397-1W RW311 Renata 26 536 Seiko SB-BL SBAL SBDE SB-DL SBDL SR726 Timex Type N Toshiba TR726SW Varta V397 Other S30 BS26 SP397 SG2 8033 W2U 5PK Maxell Silver Oxide SR726SW Low Drain Watch Battery Compatibility ENERGIZER: 397 DURACELL: D397 RAYOVAC: 397 VARTA: V397 RENATA: 397 CITIZEN: 280-28.