5
Battery Life
The Duo contains a rechargeable lithium-ion battery . With normal use, a fully charged Duo will run for approximately 1 week .
For maximum battery capacity, use the Duo at room temperature; if the Duo is used at a low temperature, the battery capacity
will be reduced .
To prolong the service life of the battery, avoid exposing the Duo to extreme temperatures.
To check the battery level of the Duo, see VIEW THE TIME/DATE, NET CALORIES, TOTAL STEPS, TOTAL DISTANCE, AND
BATTERY LEVEL on page 7 .
When the battery level reaches 10%, a low battery warning will appear in the LCD display to alert you that the battery needs to
be charged . When the battery level reaches 5%, the Duo will not sync to the iFit app nor record additional information .
Make
sure that the Duo syncs to the iFit app when the battery level is low.
If the battery level reaches 0%, data recorded on the Duo will be erased. After you charge the Duo (see CHARGE THE
DUO below) you will have to press and hold the upper-left and lower-left buttons on the Duo at the same time for 3
seconds to sync the Duo to the iFit app
(see SYNC THE DUO on page 6) .
Charge the Duo
To charge the Duo, first rotate or flip the case, if necessary, so that the
dial face is showing;
do not press the case back into the cradle yet.
This will expose two contacts on the lower edge of the case .
Next, hold the two metal pins on the charger against the contacts on the
case, and press the two arms of the charger onto the case as shown in
the lower photograph (the charger included with the square Duo has
only one arm) .
Next, make sure that the USB cable is fully plugged into the charger, and
plug the other end of the USB cable into a USB port on your computer .
It will take approximately 2–3 hours for the Duo to charge completely .
To check the battery level while the Duo is charging, look at the LCD
display and press any of the three buttons . When the Duo is fully
charged, the LCD display will display a battery level of 100% until the
charger is unplugged .
Note: To charge the Duo more quickly, plug the charger into a USB
wall adapter (not included) or a USB car charger (not included).
To remove the charger from the Duo, first lift the arm(s) of the charger off the case.
Charge The Duo
Pins
Arms
Contacts
USB
Cable
