Watch Nurse handy in addition to indicate the date and time (this is what I ask first!), This watch is chronometer and calculates the heart rate (very fast in an emergency without patient monitoring, it measures the time required to count 10 beats, and displays the result in beats per minute) or calculate body mass index (the famous weight / height²). The screen is backlit. The dial removes silicone to clean / disinfect the watch, the fastening system is choosing a clip or a pin (comes with two, easy to change). In the end, despite the rather long period, linked to a stock-blue model (I had a green instead, which goes well with my outfit), I am delighted with my purchase.