User manual

Calibrating the Treadmill Distance
To record more accurate distances for your treadmill runs, you can calibrate the treadmill distance after you run
at least 1.5 km (1 mi.) on a treadmill. If you use different treadmills, you can manually calibrate the treadmill
distance on each treadmill or after each run.
1 Start a treadmill activity (Starting an Activity, page 13).
2 Run on the treadmill until your D2 Mach 1 device records at least 1.5 km (1 mi.).
3 After you complete your run, press STOP.
4 Select an option:
• To calibrate the treadmill distance the first time, select Save.
The device prompts you to complete the treadmill calibration.
• To manually calibrate the treadmill distance after the first-time calibration, select Calibrate & Save > Yes.
5 Check the treadmill display for the distance traveled, and enter the distance on your device.
Recording an Ultra Run Activity
1 From the watch face, press START.
2 Select Ultra Run.
3 Press START to start the activity timer.
4 Start running.
5 Press LAP to record a lap and start the rest timer.
NOTE: You can configure the Lap Key setting to record a lap and start the rest timer, start the rest timer only,
or record a lap only (Activities and App Settings, page 32).
6 When you are done resting, press LAP to resume running.
7 Press UP or DOWN to view additional data pages (optional).
8 After you complete your activity, press STOP, and select Save.
Swimming
NOTICE
The device is intended for surface swimming. Scuba diving with the device may damage the product and will
void the warranty.
NOTE: The watch has wrist-based heart rate enabled for swim activities. The watch is also compatible with the
HRM-Pro
™
, HRM-Swim
™
, and HRM-Tri
™
accessories. If both wrist-based heart rate and chest heart rate data are
available, your watch uses the chest heart rate data.
Swim Terminology
Length: One trip down the pool.
Interval: One or more consecutive lengths. A new interval starts after a rest.
Stroke: A stroke is counted every time your arm wearing the watch completes a full cycle.
Swolf: Your swolf score is the sum of the time for one pool length and the number of strokes for that length. For
example, 30 seconds plus 15 strokes equals a swolf score of 45. For open water swimming, swolf is
calculated over 25 meters. Swolf is a measurement of swimming efficiency and, like golf, a lower score is
better.
Critical swim speed (CSS): Your CSS is the theoretical speed that you can maintain continuously without
exhaustion. You can use your CSS to guide your training pace and monitor your improvement.
Activities and Apps 15