This comprehensive shows in its functions is absolutely superb, at least for those who love this very modern style. I love the large square screen, its rounded lines, fastening systems. My oldest daughter, big fan of running, flashed above. However, do not be too small wrist. As it is very thin, or even bone, she wears the watch to the last notch line and it is right. The system for setting the language bracelet is too clever and super convenient. In terms of its functionality, no problems. It is super easy to use thanks to its touch pad. Really intuitive, it is not lost in the buttons! We have not met the disconnection issues with sweat as some have reported. It really is a beautiful watch, easy and reliable. A beautiful gift for runners;) NB: The box has a very explicit instructions and a USB cable to connect the watch to a PC.