“Do you have to wear the chest strap when you sleep to monitor sleep patterns.”

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• The A300 does not require the user to wear a chest strap to record sleep data. One need only to wear the watch. If you have additional questions, please don't hesitate to contact Polar directly at 800-227-1314- Mike@PolarUSA

  Answered by Polar Product Team 8 years ago

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• No, this product is for wrist only.

  Answered by CommunityAnswer 8 years ago

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