Suunto m2

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DanaT81
DanaT81 Posts: 18 Member
My two year old suunto m2 isn't giving me me a correct hr reading. I have changed both batteries and washed the strap. Help! Is it time for a new watch?

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  • IsaackGMOON
    IsaackGMOON Posts: 3,358 Member
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    I had the M2, and then upgraded to the M5 simply for the back light.

    How are you sure it's not giving you a correct HR reading?
  • DanaT81
    DanaT81 Posts: 18 Member
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    When I am working at my hardest it goes down to 68 and never over 100 when previousky my hr was 140 doing same exercise. It also displays - -
  • IsaackGMOON
    IsaackGMOON Posts: 3,358 Member
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    Try resetting it completely.

    Do your exercise, take your HR manually and see if it matches the HRM. If not, the HRM isn't working.