Maxell 361 SR721W 5 Batteries

Maxell 361 Silver Oxide SR721W 5 Batteries

Dimensions: 7.9mm Diameter x 2.1mm Height

Please keep these and all shiny child-attracting small batteries out of the reach of children; batteries are dangerous if swallowed.

Do not use (inherently low performing) alkaline batteries in place of silver oxide in any timepiece: alkaline have declining power output.

Made in Japan
Genuine Maxell Hologram Anti-Counterfeit Packaging (other package is not genuine)
1.55 volts 25mAh
Mercury Free
The 361 SR721W is completely interchangeable with the 3 6 2 SR 721 SW
This is a primary non rechargeable disposable battery

The 361 is a long life silver oxide chemistry with non-declining power output; alkaline batteries of the same 1.5 voltage start at 1.5 and at the half life are at .8 volts, silver oxide start at 1.55 volts and maintain the voltage until expiring. This is why silver oxide batteries are always used in watches, insulin pumps and sniper scopes or mission critical situations. Never use alkaline batteries for any device requiring a steady constant voltage. A watch with declining voltage may not be dependable.

This is from the American Watchmakers-Clockmakers Institute 2008 Edition Handbook "Battery Number System". This Battery is cross -referenced as: AWCI S23, Energizer 3 6 2/361, Energizer 361/3 6 2, Energizer MD3 6 2, Energizer MD361, UCAR 3 6 2/361, UCAR 361/3 6 2, UCAR MD3 6 2, UCAR MD361, Eveready 3 6 2/361, Eveready 361/3 6 2, Eveready MD3 6 2, Eveready MD361, Citizen 280-29, Duracell D3 6 2/D361, Duracell D361/D3 6 2, Duracell D3 6 2, Duracell D361, Duracell 10L180, Mallory D3 6 2/D361, Mallory D361/D3 6 2, Mallory D3 6 2, Mallory D361, Mallory 10L180, Gold Peak GP62, Sylva-Cell GP62, Maxell SR 721 SW, Maxell SR71W, Maxell SR720SW, Panasonic SP3 6 2, Panasonic SR 721 SW, Panasonic SR721W, National SP3 6 2, National SR 721 SW, National SR721W, Rayovac 3 6 2, Rayovac RW310, Renata 3 6 2, Renata 19, Seiko SR/TR721SW, Seiko SR/TR721W, Seiko SR/TR720SW, Seiko SR/TR720W, Seiko SB-DK, Seiko SB-AK, Sony SR 721 SW, Sony SR721W, Toshiba SR 721 SW, Toshiba SR721W, Toshiba SR720SW, Toshiba SR720W, Toshiba W1U, Toshiba D1U, Varta V3 6 2, Varta V361, Varta 532

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Fits and replaces: