Do you have a question about the Suunto D4 and is the answer not in the manual?
Configure alarm, time, dual time, date, units, backlight, and tones in TIME mode.
Understand the Suunto Reduced Gradient Bubble Model for dive safety.
Follow steps for emergency ascents if the dive computer malfunctions.
Learn about nitrox diving risks, oxygen toxicity, and handling enriched air.
Configure nitrox settings and personal/altitude adjustments for dive calculations.
Select AIR, NITROX, or FREE mode and understand the automatic activation process.
Apply personal factors to make dive calculations more conservative.
Learn about mandatory stops triggered by exceeding ascent rate limits.
Monitor ascent rate and understand warnings for safe ascent.
Learn about decompression dives, ascent time, and ceiling requirements.
Use the Suunto D4 for diving with oxygen-enriched gas mixtures.
Use the dive planner to review no-decompression limits considering previous dives.
Follow no-fly time recommendations from DAN and UHMS.
In-depth explanation of the Reduced Gradient Bubble Model for dive safety.
How RGBM adapts decompression based on dive profiles and personal settings.
Estimating oxygen exposure using time limits, PO2, CNS%, and OTU.
| Nitrox | Yes |
|---|---|
| Freedive Mode | Yes |
| Water resistance | 100 m |
| Glass material | Mineral glass |
| Maximum operating depth | 100 m (328 ft) |
| Dive Modes | Air, Nitrox, Freedive |
| Display | LCD |
| Nitrox Compatible | Yes |
| Battery life | 1.5-2 years (in typical use) |