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The Polar M400 Watch monitors the user’s training data, including heart rate, speed, distance and route.

Replacement Dust cover for Polar M400 sports watch

I have lost the small rubber dust cover that covers the charging port on my Polar M400 watch and would like to purchase a new one. Are they available?

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Huw, later versions of the M400 removed the dust cover as it hindered the drying out of the charging port, so I don’t think you need to replace it. The charging port is problematic and mine has now broken. The newer model M430 has a more robust charging port.

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Huw Morgan will be eternally grateful.
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