Superior Maxell 399 SR927W Micro Silver Oxide Watch Button Cell
Premium fresh Maxell Micro Silver Oxide SR927W 10 Batteries Genuine Japan Date Coded
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Do not use (inherently low performing) "LR" alkaline batteries in place of silver oxide in any timepiece.
these and all shiny child-attracting small batteries out of the reach of
children; they are dangerous if swallowed.
Made in Japan
Genuine Maxell Hologram Anti-Counterfeit Packaging (other package is not genuine)
Dimensions 9.5mm Diameter x 2.7mm Height
1.55 volts 57-60 mAh
The 399 SR927SW is completely interchangeable with the 395 SR927W
This is a primary non rechargeable disposable battery
The 399 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 S19, Energizer 399/395, Energizer 399, Energizer 395, Eveready 399/395, Eveready 399, Eveready 395, UCAR 399, UCAR 395, UCAR 399/395, Citizen 280-44, Duracell D399, Duracell D395, Mallory 399, Mallory 395, Gold Peak GP99, Sylva Cell GP99, Maxell SR927W Maxell SR927W, Panasonic SP399, Panasonic SP395, Panasonic SR927W, Panasonic SR926W, National SP395, National SP399, National SR927W, National SR927SW, Rayovac 395, Rayovac 399, Rayovac RW413, Renata 395, Renata 399, Renata 35, Seiko SR927W, Seiko TR927W, Seiko SR927W, Seiko TR926W, Seiko SB-BP, Seiko SB-EP, Seizaiken SR927W, Seizaiken TR927W, Seizaiken SR926W, Seizaiken TR926W, Seizaiken SB-BP, Seizaiken SB-EP, Sony SR927W, Sony SR927SW, Sony 395, Sony 399, Energytec SR927W, Energytec SR92SW, Energytec 395, Energytec 399, Toshiba SR927W, Toshiba SR927SW, Toshiba W2T, Toshiba D2T, Varta V395, Varta 399, Varta 523