Polar Unite is a fitness watch designed to help you discover your potential. It comes with advanced wrist-based heart rate. The Sleep Plus Stages™ sleep tracking monitors your sleep stages (REM, light and deep sleep) and gives you sleep feedback and a numerical sleep score. Nightly Recharge™ measures your recovery every night and the FitSpark™ training guide gives you personalised workout guidance based on your readiness. Polar Unite helps you to relax and relieve stress with Serene™ breathing exercises. You can connect it to your phone to use GPS. You can customise Polar Unite with wristbands and watch face colour themes. Features Ultra-light and stylish design with wrist-based heart rate and snap & slip wristband. Easy to adapt to your style with changeable wristbands and watch face colour themes. Complete toolbox for successful heart rate training: Nightly Recharge™, Sleep Plus Stages™ and FitSpark™. Polar Flow app and web: online training log for easy follow-up and planning. Connected GPS. Nightly Recharge™ recovery measurement FitSpark™ daily training guide Sleep Plus Stages™ sleep tracking