Now I have decided this after a lot of searching, I was looking for a reasonable clock. First they should even be waterproof for swimming but the thought in SportScheck as a cost 400Euro (Forerunner, GPS and whatever) The 60Euro runtastic chest strap for the app is currently sold out, but also costs twice as much as this clock here now (and had me back a piece of phone addict made), and now I'm fully satisfied:
+ Extremely low (EUR 27.41 Free Delivery. Unbeatable price / performance) + Beurer is not a no-name, precise, reliable + For changing batteries themselves (at low budget Polar watches unthinkable) + Waterproof (I had not noticed, but is available in the technical details, swim no problem) + Signal is automatically detected by Studio equipment + Pleasant appearance, not cheap
