1
Wrist device
1.1
Power off/on
The device is turned on by pressing the button firmly once for one second. The device will vibrate
when it is ready to use.
The device can be turned off (and rebooted) by pressing the button down for 10 seconds. The
display will show a power off warning at first during which you can still release the button without
powering off the device.
Holding the button down for over eight seconds will start the device in the DFU mode and
the display will stay dark. In this case, the device should be turned off and back on again
with a shorter press.
For the off-hand detection to work properly, the device should
not be
worn when turning it
on.
1.2
Positioning of the device
When wearing the device, position the device approximately one finger width up the arm from the
wrist bone. If possible, prefer the non-dominant hand as this will increase the quality of the data.
1.3
Low battery/charging
The device has a screen showing remaining battery. Currently no warning for low battery exists.
The device can be recharged using a normal USB cable. When connecting the device to a charger, it
will vibrate and display a recharging screen. Removing the device from the charger will also cause
the device to vibrate.
1.4
Usage modes
The device has two modes: the sampled mode and the continuous mode. During the sampled mode,
the device measures the heart rate every 5 minutes or whenever the button is pressed.
