I tried the unit with several cables I have and works as promised.
Using MacBook Pro usbc-MagSafe original cable it delivers 140w as promised.
Using usbc-usbc it delivers 100W which is the limit of my MacBook Pro usbc port.
Mind to use the proper USBC cable. It must be certified PD3.1 to reach the maximum speed of 140w and always if you device supports that amount (in my case only the MacBook Pro can reach 140W)
A bit of plastic touch, considering the price I would have expected a little bit of premium finish.
At the moment it meets the expectations. Hope is going to last at least 2/3 years of use.