42mm/1.65 inch

• Wrist-Based Heart Rate Elevate - Wrist-based heart rate gives you 24/7 monitoring - no chest strap required
• Ruggedized For Adventure-Fit for adventure with rugged design featuring stainless steel bezel, buttons and rear case
• Scratch-resistant sapphire lens
• Training Statistics - Get key stats at your fingertips with the performance widget that shows your training status, training load and more
• Multiple Sport/Activity Profiles - Preloaded activity profiles for all of your sports and adventures
• Wi-Fi®-Enabled - Wi-Fi-enabled for automatic activity uploads directly to Garmin Connect - online fitness community when connected to wireless networks (available in Sapphire versions only)
• Connected Features - Includes smart notifications2, automatic uploads to Garmin Connect and personalization through free watch faces and apps from our Connect IQ store
• Quickfit Bands - A selection of QuickFit bands in your choice of premium leather, metal or silicone makes it easy to mix and match styles to go with any sport or activity (no tools required -  just swap, click and go)
• Navigator + ABC - Built-in navigation sensors include 3-axis compass, gyroscope and barometric altimeter as well as GPS and GLONASS capability to track in more challenging environments