My watch may be old, heavy and black and white but the thing sure works like the day I bought it!

Love this thing, great for connecting smart trainer and laptop for running the zwift app.

This thing is small, easy to use, and works

I bought this to connect my Garmin Speed and Cadence sensors to my Surface 4 Pro and use Zwift (a virtual cycling program, if you don't know it and ride a trainer, I highly recommend it).This thing is super easy to use