Maxell 366 SR1116SW 10 Batteries
Dimensions: 11.6mm Diameter x 1.6mm Height
365 SR1116W and 366 SR1116SW are completely interchangeable
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)
1.55 volts 29 mAh
The 366 (366/365) 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 S16, Energizer 366, Energizer 365, Energizer 366/365, Energizer 365/366, UCAR 366, UCAR 365, UCAR 366/365, UCAR 365/366, Eveready 366, Eveready 365, Eveready 366/365, Eveready 365/366, Citizen 280-46, Duracell D366, Duracell D365, Duracell D366/D365, Duracell D365/D366, Mallory D366, Mallory D365, Mallory D366/D365, Mallory D365/D366, Gold Peak GP66, Sylva-Cell GP66, Maxell SR1116SW, Maxell SR1116W, Panasonic SR1116SW, Panasonic SR1116W, National SR1116SW, SR1116W, Rayovac 366, Rayovac 365, Rayovac R318, Renata 366, Renata 365, Seiko SR1116SW, Seiko SR1116W, Sony 366, Sony 365, Sony SR1116SW, Sony SR1116W, Varta V366, Varta V365