MAXELL 321 SR616SW - 1 Pack of 5 Batteries

Product Description

Superior Maxell Micro Silver Oxide SR616SW One Pack of 5 Batteries Official 321

Do not use (inherently low performing) alkaline batteries in place of silver oxide in any timepiece.

Made in Japan
Genuine Maxell Hologram Anti-Counterfeit Packaging (other package is not genuine)
Dimensions 6.8mm Diameter x 1.6mm Height
1.55 volts 15-16 mAh
Mercury Free
This is a primary non rechargeable disposable battery

The 321 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 cannot give the correct time.

Fits and Replaces: This is from the American Watchmakers-Clockmakers Institute 2008 Edition Handbook "Battery Number System". This Battery is cross-referenced as: AWCI S34, Energizer 321, UCAR 321, Eveready 321, Citizen 280-73, Duracell D321, Mallory D321, Gold Peak GP21, Sylva-cell GP21, Maxell SR616SW, Panasonic SP321, Panasonic SR616SW, National SP321, National SR616SW, Rayovac 321, Rayovac RW321, Renata 321, Renata 38, Seiko SR/TR616SW, Seiko SB-AF, Seiko SB-DF, Sony SR616SW, Sony 321, Energytec SR616SW, Energytec 321, Toshiba SR616SW, Toshiba DPV, Varta V321, Varta 540