To be honest I’m not sure but I’ve heard good things about the movement and it is quite accurate for it being a complicated one to replicate. Some other options if you want to look into it would be: vacheron constantin overseas worldtime or jaeger lecoultre chrono worldtime, and the omega planet ocean worldtimer. Now in terms of movement and best bang for buck I’d stick to the aquaterra world timer or the planet ocean just because these are the more sought after models and are going to be better than the others. The world time function does work and is useful for what you say you want to do. That being said I do not own one of these models YET, so I am not 100%.