The Polar V800 is an advanced multisport GPS watch for serious sports enthusiasts and professional athletes who want to reach peak performance.  Sync with Polar Flow (free) for training planning and logging.  This is the watch of top Biathletes like overall 2017-2018 World Cup winner Kaisa Makarainen (FIN). See full details here:https://www.polar.com/us-en/products/pro/V800