“How big is the chest strap - what size chest will it fit comfortably I'm looking to wear this during work and gym”

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• The chest strap that is packaged with the M400 has an adjustable range of 27"-60". If you have any other questions, please contact Polar at 800-227-1314 - Mike@PolarUSA

  Answered by Polar Product Team 9 years ago

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