Meet the Polar M430, a $230 running watch 'built for accuracy'
Review: Running or not, you'll want the Polar M430 on your wrist | Ars Technica
Polar - We're pleased to announce the birth of two new editions to the Polar running watch family. Polar M430 in all black. Polar M430 in white, with a shorter wristband. https://polar.com/m430
Polar M430 vs M400 Vs M600 Specifications & Comparison