“what does 40 mm bt mean?”

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• 40mm is the watch face diameter. This one is 40 millimeters across. Bt stands for bluetooth, which is how it connects to your phone to update and synchronize apps and watch faces.

  Answered by ZachL 2 months ago

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• The size is 40mm around and bt is for bluetooth/wifi only model

  Answered by LjH1 3 months ago

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