This is the Garmin Descent G1 Non-Solar Scuba Dive Wrist ComputerFeatures: Support for multiple dive modes — ranging from technical to free dives. GPS enabled to help mark surface entry and exit points. Store up to 200 dives. Upload, share and review dives in the Garmin Dive™ app. Measure your performance, and track your stats above water. Track your activities with more than 30 built-in sports apps and advanced training features. Explore longer with up to 25 hours in dive mode, 21 days in smartwatch mode and 26 hours in GPS mode. DIVE MODES: Get multiple dive modes for single and multiple gas dives (including nitrox and trimix), gauge, apnea, apnea hunt and closed-circuit rebreather. SURFACE MULTI-GNSS: Track your entry and exit points2 with advanced satellite connectivity. DIVE LOG: Store and review data for up to 200 dives — and share via the Garmin Dive app CUSTOMIZABLE DIVE MODES: Add additional screens for each dive mode that features the fields you want to see. COMPATIBLE WITH INREACH®: Pair with inReach satellite communicators2 and the inReach dive case (each sold separately). DIVE COMPASS: Easily navigate below the waterline with the built-in 3-axis compass. TIDE DATA: Stay up to date on ocean conditions so you can catch the perfect wave. Just pair the watch with your compatible smartphone. SURFLINE® See conditions — such as tide, wave height, wind and surf rating — for each of the five nearest surf spots, when paired with the Garmin Connect™ app on your compatible smartphone. YOU’RE A DIVER UNDERNEATH Land or sea, this compact dive computer is built for both of your worlds.