Hands-on: Polar's new Android Wear based M600 GPS Sport Watch (with music!) | DC Rainmaker
Polar M600 - Here it is - some initial thoughts & specs - followed by review
Amazon.com : QGHXO Band for Garmin Vivoactive HR, Soft Silicone Replacement Watch Band Only for Garmin Vivoactive HR (No Tracker, Replacement Bands Only) : Sports & Outdoors
Garmin Vivoactive 3 vs Polar M600 - Compare fitness trackers.