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How to, step by step instructions to replace the battery on a Seiko SNA411 Flightmaster watch. Topics covered include removing a solid end link bracelet, opening the caseback, insering the battery (in this case a Renata 399), removing and re-lubricating the caseback gasket, closing the caseback, and setting the watch.
If the chronograph hands are not resetting back to zero after a battery change please see this video (it has the same 7T62 movement as the SNA411):
• Chronograph Hand Align...
If you want to use the alarm function please see the following video (it has the same 7T62 movement as the SNA411):
• How to: Setting the Al...
I'm Colin Potts, owner of Watch off the Cuff in Milton, ON Canada, a boutique watch repair company that repairs watches, sells new and vintage watches and watch parts, and also provides technical resources, watch articles and more:
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