The clock is not bad in itself, functions for my needs more than adequate. The pity is that you just do not get a program for the evaluation on the PC, but always relies on an Internet connection. This is not always convenient, especially if you live in the sticks. Last of the RF Sensor has spun, has only made jumps from running-km 10, 20-170, and more, in rapid succession. Since I do not know, what was the reason, I'm going to watch first on. The biggest shortcoming is the material of the bracelet, which is made of a very soft silicone. Although this is very comfortable to wear, but unfortunately a huge Fusselmagnet. So if you, like me, has bought the clock in white and she wears in everyday life, will probably annoy constantly that she always looks dirty because it attracts lint and dust magically. Blow off is not, lint from the clothes stick to it formally (once the sweater sleeves over it had, already sees the Thing as Sau), unfortunately wipe helps not much, because you smeared all just. So you should buy the clock at least in black because of the dust adheres even on it, but at least you will not see it: /