Amazfit Stratos is a premium multisport GPS smartwatch with 5 ATM water resistance, VO2max fitness level analysis, heart rate sensor, and transflective always-on color touch display. The rugged carbon fiber design case features a polished ceramic bezel, scratch-resistant tempered glass, three stainless steel physical buttons for easy navigation and an exchangeable 22mm durable silicone watch strap. The watch supports detailed sports and GPS tracking for: running, walking, cycling, swimming, elliptical machine, mountaineering, trail running, triathlon, tennis, soccer and skiing. Through a partnership with Firstbeat this watch also measures maximum oxygen consumption (VO2max), exercise load (TD) and recovery time. All data can be synced and made available in Strava.