Open USB port

https://www.xmodulo.com/change-usb-device-permission-linux.html

0. connect the watch to USB

1. run

        lsusb -vvv`

2. find smth like

        idVendor           0x10c4 Silicon Labs
        idProduct          0xea60 CP210x UART Bridge

3. prepare string rule with values and copy it

        SUBSYSTEMS=="usb", ATTRS{idVendor}=="10c4", ATTRS{idProduct}=="ea60", GROUP="users", MODE="0666"

4. run

        sudo vi /etc/udev/rules.d/50-myusb.rules

5. paste copied string and :wq vim

6. disconnect the watch from USB

7. run

        sudo udevadm control --reload

7. connect the watch to USB and verify