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![Updated] Why I switched from Garmin to Polar M400 - Middleagemarathoner.com](https://middleagemarathoner.com/wp-content/uploads/2018/10/Polar-Flow11.jpg "Updated] Why I switched from Garmin to Polar M400 - Middleagemarathoner.com")
Updated] Why I switched from Garmin to Polar M400 - Middleagemarathoner.com
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Polar M400
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Polar M400 review: A feature-packed GPS running watch that can also track your steps and sleep - CNET
The New M400 from Polar: GPS Watch with 24/7 Activity Tracking
