Whether you dive with or without tanks, in saltwater or fresh water, breathing nitrox, trimix or holding your breath — Descent Mk1 is the intuitive, do-it-all dive computer you’ve been waiting for. It’s the first watch-sized dive computer to offer surface GPS navigation with full-color onscreen mapping and location reference — so you can easily mark your dive entry and exit points.
Once underwater, the proven Bühlmann ZHL-16c algorithm makes sure you’re staying within your dive limits. Selectable tone and vibration alerts help keep you informed while you’re submerged. Returning topside, Descent Mk1 also functions as a robust training companion, offering the best features of our fēnix® 5Xultimate multisport GPS watch, including smart notifications³ to help you stay in touch on the go. What’s more, the Descent Mk1 design is so sleek, comfortable and elegantly crafted, you’ll want to wear it as your everyday timepiece.
| Lens Material | Sapphire crystal |
| Bezel Material | stainless steel or titanium |
| Case material | fiber-reinforced polymer |
| QuickFit™ watch band compatible | (26 mm) |
| Strap material | silicone or titanium |
| Physical size | 51 x 51 x 17.8 mm |
| Weight | steel with silicone band: 101 g |
| Water rating | 10 ATM Dive (100 Meter EN13319) |
| Display type | sunlight-visible, transflective memory-in-pixel (MIP) |
| Display size | 1.2" (30.4 mm) diameter |
| Display resolution | 240 x 240 pixels |
| Color display | Yes |
| Battery life | Dive mode: Up to 36 hours |
| Watch mode: Up to 18 days | |
| Smartwatch mode: Up to 10 days | |
| GPS/HR Activity mode: Up to 20 hours | |
| UltraTrac™ mode: Up to 28 hours | |
| Memory/History | 16 GB |
| Clock Features | Yes |
| Time/date | Yes |
| GPS Time Sync | Yes |
| Automatic daylight saving time | Yes |
| Alarm clock | Yes |
| Timer | Yes |
| Stopwatch | Yes |
| Sunrise/sunset times | Yes |
| Face It™ watch face creator | Yes |