Uwatch u18 factory reset without usb debugging

Hello. I bought new uwatch u18 few days ago from gearbest. It the description it say than you can install any kind of apk so I installed a new launcher. The launcher didnt't support so small screen so I can't go to settings to delete the launcher or even turn usb debugging on to reset it via computer. I happens than my computer doesn't even dedect the watch so I can't even use android multi tool. Do I have to use usb debugging to communicate via watch and PC. Is there any other program that could help? Thanks in advance Olli Peura