• Bring your phone within 10 m (33 ft.) of the watch.
• On your phone, open the Garmin Connect app, select
or
, and select Garmin Devices > Add Device to
enter pairing mode.
• From the watch face, hold MENU, and select
Connectivity > Phone > Pair Phone.
Can I use my Bluetooth sensor with my watch?
The watch is compatible with some Bluetooth sensors.
The first time you connect a sensor to your Garmin watch,
you must pair the watch and sensor. After they are paired,
the watch connects to the sensor automatically when you
start an activity and the sensor is active and within range.
1 Hold MENU.
2 Select Sensors & Accessories > Add New.
3 Select an option:
• Select Search All Sensors.
• Select your sensor type.
You can customize the optional data fields
(
Customizing the Data Screens, page 16
).
My headphones will not connect to the watch
If your Bluetooth headphones were previously connected
to your phone, they may connect to your phone
automatically instead of connecting to your watch. You
can try these tips.
• Turn off Bluetooth technology on your phone.
Refer to the owner's manual for your phone for more
information.
• Stay 10 m (33 ft.) away from your phone while
connecting your headphones to your watch.
• Pair your headphones with your watch (
).
My music cuts out or my headphones won't stay
connected
When using a D2 Mach 1 watch connected to Bluetooth
headphones, the signal is strongest when there is a direct
line of sight between the watch and the antenna on the
headphones.
• If the signal passes through your body, you may
experience signal loss or your headphones may
become disconnected.
• If you wear your D2 Mach 1 watch on your left
wrist, you should make sure the headphone's Bluetooth
antenna is on your left ear.
• Since headphones vary by model, you can try wearing
the watch on your other wrist.
• If you are using metal or leather watch bands, you
can switch to silicone watch bands to improve signal
strength.
Restarting Your Watch
1 Hold LIGHT until the watch turns off.
2 Hold LIGHT to turn on the watch.
Resetting All Default Settings
Before you reset all default settings, you should sync the
watch with the Garmin Connect app to upload your activity
data.
You can reset all of the watch settings to the factory
default values.
1 From the watch face, hold MENU.
2 Select System > Reset.
3 Select an option:
• To reset all of the watch settings to the factory
default values and save all user-entered information
and activity history, select Reset Default Settings.
• To delete all activities from the history, select Delete
All Activities.
• To reset all distance and time totals, select Reset
Totals.
• To reset all of the watch settings to the
factory default values and delete all user-entered
information and activity history, select Delete Data
and Reset Settings.
NOTE: If you have set up a Garmin Pay wallet, this
option deletes the wallet from your watch. If you
have music stored on your watch, this option deletes
your stored music.
Tips for Maximizing the Battery Life
To extend the life of the battery, you can try these tips.
• Change the power mode during an activity (
).
• Turn on the battery saver feature from the controls
menu (
).
• Reduce the screen timeout (
).
• Stop using the Always On Display screen timeout
option, and select a shorter timeout (
).
• Reduce the screen brightness (
).
• Use UltraTrac satellite mode for your activity (
).
• Turn off Bluetooth technology when you are not using
connected features (
).
• When pausing your activity for a longer period of time,
use the Resume Later option (
).
• Use a watch face that is not updated every second.
For example, use a watch face without a second hand
(
Customizing the Watch Face, page 25
).
• Limit the phone notifications the watch displays
(
Managing Notifications, page 48
).
• Stop broadcasting heart rate data to paired devices
(
Broadcasting Heart Rate Data, page 38
).
Troubleshooting
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