I recently purchased the 140T. I had (and I'm really not the Technick Freak) does not even look in manual. Everything clear and super course. Learning by doing. The T140 was immediately tested on the round trip to our skiing holiday, and everything worked perfectly. The only drawback: The Geschwindigkeitswarung because it warns directly at more than 1-2 kmh over the limit. Because you could have been typing + 5 kmh. But yes does not matter, you can switch off yes. Really recommendable product !!!!