Garmin Descent™ G1, Rugged Dive Computer, Multiple Dive Modes, Activity Tracking, Powder Gray

Amazon.com Price: $544.99 (as of 02/01/2024 11:57 PST- Details)

Rugged, watch-style dive computer with a sapphire lens, silicone bands and an easy-to-read monochrome display
Battery life: up to 25 hours in dive mode, 21 days in smartwatch mode and 26 hours in GPS mode
GPS/GLONASS/Galileo support allows divers to mark surface entry and exit points so you can see exactly where you started and ended the dive