Hello,
I have a touch pro 2 and have managed to get my MBW-150 working with version v1.2.4.2 and previous versions by making a slight registry edit that was mentioned somewhere else on this forum in relevence to older watches
The edit is
Change "HKLM\Software\Widcomm\BTConfig\Services\0001\Auto" from 1 to 0 and restart the device.
You then pair the device using smartwathM and once pairing is complete the watch connects once a button is pressed

U could probably pair using widcomm bluetooth stack instead of smartwatch too but i have not tested that way
Hope this helps