When it comes to Seiko's quartz dive watches, there are a few design quirks. One of them is how Seiko tracks battery changes. Last couple of weeks we've had comments talking about this. The reason Seiko did it was to minimize the number of times a dive watch would need to be opened between battery changes by taking the guesswork out of when a change might need to be done. Now, when a Seiko quartz is low on power, the seconds hand will start jumping in two-second intervals. I assumed out of hand (and have for years) that the battery change marks were made after a battery change, but it may be they were done to show when in the future the battery would need a change. Not sure why this hard for me to grasp but here we are.

PSA: This video contains sub-optimal levels of editing, enough to get it done. We have zero script beyond the questions people have sent in. Same for the sound - I forget my microphone pretty regularly, so if you can hear anything count that as a win. Even if that "anything" is tuneless humming. I did pump up the volume though. YMMV if you choose to spend part of your life on this. No Refunds. Enjoy!

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No ammonites were harmed in the making of this video.