Garmin fēnix 6X – Pro Solar Edition

Overview:
Get a battery boost from the sunlight, so you can go longer between charges.
How is your body holding up? Wrist-based heart rate1 and Pulse Ox will let you know.
Need running coach that knows the terrain? Check out the PacePro feature.
Hit the slopes with ski maps for 2,000 worldwide resorts.
Music on your wrist, and no phone weighing you down.
Take a trip and leave the cord at home. Solar charging lets you get up to 24 days of battery life.
Case Size:
51mm (the diameter of the watch housing)