Polar M400 Sports Watch (White) 90051342 B&H Photo Video

Polar M400 - with heart rate sensor - GPS watch

Polar M400 - With heart rate sensor - GPS watch - cycle, running

Polar M400 GPS Watch with Heart Rate Black 90051339 - Best Buy

Polar M400 Sports Watch (White) 90051342 B&H Photo Video

Polar M400 review: A feature-packed GPS running watch that can also track your steps and sleep - CNET

Review: Running or not, you'll want the Polar M430 on your wrist

Best Buy: Polar M400 GPS Watch with Heart Rate Black 90051339

Polar M400 GPS & Activity Tracker Watch In-Depth Review

Polar M400 review: A feature-packed GPS running watch that can also track your steps and sleep - CNET

Polar M400 review: A feature-packed GPS running watch that can also track your steps and sleep - CNET