US here: I assumed that I got a 10 Watt charger but I just realized that the 10 Watt looks the same as the 12 Watt. I didn't check the label. I gave the charger to my wife for her iPhone. I have a 60-Watt charger in the office (6 ports and 12 Watts Max per port), a 40-Watt charger in my home office (5 ports and 10 Watts Max per port), and a 10-Watt charger on the night stand. 10 or 12 Watts gets the job done.
I'm using the iPhone 7+ and the iPad Mini 5 and so one, the other or both are always on the charger. So there's always a device that is fully or almost fully charged.