Instruct: Classify the given Amazon review into positive or negative sentiment.
Query: Love it and use it a lot here. But not good for some other countries

I bought one for myself.I run with it all the time. I only use simple functions and I have no complain.The function I use most often is the interval training function (run x min and then walk y min)It shows distance, time, speed, heart rate, calories burned, etc very clearly.I am very satisfied with it.However, I probably didn't read some descriptions well.I was all excited and bought this back home (to Taiwan) to my father.And then I realized it was sooooo difficult to get signal there.... (only succeeded once or twice...)I believe it will work very well for a lot of countries (it has a lot of lanugage choice), but still please check first if you are going to use this in other countries.