The title is formulated maybe hard, but: - A cardio on the Stairmaster or treadmill, the rowing machine is not to be recorded with the clock. - Not nice is the function of the clock of just one app, I hope that even more changes. There is not the possibility of runtastic etc. to use. - The built-in pulse measurement showed me between left and right wrist about 20 bpm difference, that's not OK. + For all other activities like hiking, biking, running, everything is in motion and also the GPS sensor of the phone is responsive to the clock possible. + Otherwise, pleasant to wear part and I'm not a watch wearer. + Connections via Bluetooth are very reliable and also the possibility that Musikapp or the phone itself must be controlled very well.