Explore both of your worlds, underwater and topside, with Descent™ Mk2, the watch-sized dive computer. It features multiple dive modes, such as single and multiple gas dives, gauge, apnea, apnea hunt and closed-circuit rebreather. Descent Mk2 comes with ABC sensors with an underwater 3-axis compass as well as surface GPS capabilities to mark your entry and exit points (GPS tracking does not work underwater). On land, Descent Mk2 doubles as a premium multisport GPS smartwatch with multi-GNSS support, multiple sports apps, wrist-based heart rate monitoring estimates, Pulse Ox (this is not a medical device and is not intended for use in the diagnosis or monitoring of any medical condition) sensor, advanced training features, Garmin Pay™ payment service (not all countries and payment networks are eligible), music storage, smart notifications (when paired with a compatible smartphone) for calls, texts and calendar alerts and more.