Garmin Descent Mk2i GPS Dive Computer

General Lens Material sapphire crystal Bezel Material Diamond-like Carbon (DLC) coated titanium Case material fiber-reinforced polymer with metal rear cover QuickFit™ watch band compatible yes (26 mm)   Strap material silicone or titanium Physical size 52 x 52 x 17.8 mm Fits wrists with the following circumference: Silicone band: 135-230 mm Extra long silicone band: 135-355 mm Titanium bracelet: 135-220 mm Color display Display Size 1.4” (35.56 mm) diameter Display resolution 280 x 280 pixels Display Type sunlight-visible, transflective memory-in-pixel (MIP) Weight silicone band: 99.6 g titanium band: 160.3 g Water rating Dive (100 meters) Battery life Smartwatch: Up to 16 days Battery Saver Watch Mode: Up to 50 days GPS: Up to 48 hours GPS + Music: Up to 15 hours Max Battery GPS Mode: Up to 96 hours Dive mode: Up to 80 hours Dive mode with Descent T1: Up to 32 hours Expedition GPS Activity: up to 35 days Memory/History 32 GB Clock