Suunto D6i User Guide
Compass
Suunto D6i includes a digital compass.
The tilt-compensated compass gives you accurate readings even if the compass is not horizontally level.
The compass can be activated from either time or dive mode and shows the current bearing and depth.
- While in TIME or DIVE mode, keep pressed to activate the compass.

- Press to exit the compass display. If you are underwater, keep [SELECT] pressed to exit.
When in dive mode, the compass display includes additional information in the bottom left and right views.
- Press to scroll through the bottom left views. (tank pressure, max. depth, time)
- Press to scroll through the bottom right views. (dive time, temperature, bearing)

Calibrating compass
When you first start using Suunto D6i, the compass needs to be calibrated. Suunto D6i displays the calibration icon when you enter the compass.

Calibrate the compass by slowly rotating the unit in your hand in large figure-8 loops..
During the calibration process, the compass adjusts itself to the surrounding magnetic field.
If the calibration fails,Try Again appears. If calibration continues to fail, move to another location and try again.
When traveling overseas, it is recommended that you recalibrate the compass at the new location before using it.
To manually start the calibration:
- While in the compass view, keep pressed.
- Press to scroll to Calibration.
- Press to start the calibration.
Setting declination
You should always adjust your compass declination for the area where you are diving to get accurate heading readings. Check the local declination from a trusted source and set the value in Suunto D6i.
- While in the compass view, keep pressed.
- Press to scroll to Declination and press .
- Press to toggle to East or West and confirm with .
- Set Declination Degrees with or .
- Press to save and exit.
Setting compass timeout
You can define how long the compass stays on after you have activated it. Reset the timeout with any button press while using the compass.
After the timeout, the Suunto D6i returns to time or dive mode.
To set the timeout:
- While in the compass display, keep pressed.
- Press to scroll to Timeout and press .
- Adjust the timeout time with or .
- Press to exit.
Setting bearing lock
A bearing is the angle between north and your target. In simple terms, it is the direction you want to travel. Your heading, on the other hand, is your actual direction of travel.
The default bearing is North.
You can set a bearing lock to help you orientate yourself underwater and ensure you maintain your direction of travel. For example, you can set a bearing lock for the direction to a reef before leaving the boat.
The last locked bearing is stored and available the next time the compass is activated. In Dive mode, the locked bearings are also stored in the log. To lock a bearing:
- With the compass active, hold the watch in front of you and turn yourself towards your target.
- Press to lock the current degree displayed on the watch as your bearing.
- Press to clear the lock.

If, at any point, your bearing moves outside the compass display, right or left arrows appear to show turn direction.
Suunto D6i provides help for navigating square and triangular patterns, as well as navigating a return heading with the following symbols.
| Symbol | Explanation |
|---|---|
| You are traveling towards the locked bearing. | |
| You are 90 (or 270) degrees from the locked bearing. | |
| You are 180 degrees from the locked bearing. | |
| You are 120 (or 240) degrees from the locked bearing. |