This USB 2.0 iBus S2 tool connects your iWatch S2 (38mm & 42mm) with Lightning USB cable to your computer’s USB port for restore & upgrade and repair software etc. also can fix the related issue once iwatch glass digitizer touch got a replacement. Eg, If your Apple Watch displays a red exclamation point after a software update, that's can easily solve by iBus that's no more need to contact Apple Support for service and so on.
How to go to DFU & Recovery mode for iWatch?
NOTE: We dont guide you how to use it make sure you know how to use it before buying it, however you can still find solution or help from official site or at https://www.martview-forum.com/