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This one didn't work well with swimming for me. I think the Bluetooth heart rate monitoring technology doesn't work underwater. I have an A360 and it works underwater and gives you length of time and calories burned. And yes I am a female and I thought it was a little bit chunky. Tha A360 is not. I think they cost close to the same price. The M 400 has GPS A360 does not.
Sorry, there was a problem. Please try again later.The M400 will not track any swim specific metrics (distance/stroke style..). For that functionality, one would need to go to the V800 multisport unit - Mike @ Polar USA
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