The correct battery depends on the exact Nixon Time Teller reference and movement. Check the reference on the caseback and compare it with Nixon’s official battery-replacement guide before buying a cell. Do not use a generic watch-battery chart as proof of fitment for every Time Teller.
How do I confirm the battery for my Nixon Time Teller?
Use the full watch reference, not just “Time Teller,” to look up the replacement battery in Nixon’s model-specific guide. If the reference is missing or the listing is unclear, ask Nixon service or a qualified watchmaker to identify the movement and required battery. Cross-reference numbers such as 377 and 379 describe cells with different dimensions; they do not establish which one fits a particular watch.
Who should replace the battery?
A qualified watchmaker or Nixon service provider can replace the battery and check that the caseback and gasket are correctly refitted. This matters if you rely on the watch’s water resistance. Do not open the case or submerge the watch to test it; a battery replacement alone does not confirm water resistance.
Are 377 and 379 watch batteries the same
No. A 377 is commonly cross-referenced as SR626SW, while a 379 is SR521SW; both are silver-oxide cells, but their dimensions differ. A 379 is not a drop-in substitute for a watch specified for a 377. Check the exact Time Teller model or Nixon’s replacement guidance before buying.
Sources: Nixon watch battery replacement guide; Energizer 377 silver-oxide watch battery; Energizer 379 silver-oxide watch battery
