This stopwatch is well made and feels very nice in the hand. The buttons are well placed and have a nice, positive feels to them. I don't have any problem with the product itself. I have a challenge in using the product as the only manual included with it is in Chinese. There is a guide of sorts printed on the watch itself. It uses white, red and yellow squares to indicate which buttons to press for which functions. It doesn't tell me which button is the white one, which one is the red one and which the yellow one. I'm going to have to sit down and figure it out by trial and error.