Contour RollerMouse Pro Wireless Product Manual page 7

Charging
To charge your RollerMouse remove the USB extender and
dongle from the charging cable. Plug the USB-C end into the
RollerMouse and connect to a USB-A at your computer.
Your RollerMouse will be fully charged in approx. 5 hours.
You may continue to use the RollerMouse as it charges.
Wiresless connection
Once powered on, the device is in automatic mode which
will pair to the first available connection. The device will
attempt to connect to the dongle first. If no connection is
made, the device will attempt to connect via Bluetooth
using the pairing information that is already in the unit. If no
pairing information is available, it will start Bluetooth pairing
mode and remain in that pairing mode for about two
minutes.
If the device is left in automatic pairing mode, the RollerMouse
will cycle through the above steps each time it's powered
off and then powered back on again.
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