After as always super fast delivery from Amazon and reading the reviews I had bought a little worry the wrong device. Wrongly Fortunately. All functions are working properly. The compass function I "calibrated" with my Navi, you have to let the Hama Compass only a little time. The altimeter was tested in a 24-storey high-rise. Height accurately measured (height of the steps by 16 steps by 24 = 67 meters, the Hama altimeter showed me at 70 meters and I think that is excellent for such a cheap device.
A minor drawback I've found yet: Unfortunately, there are no "off button". The future will tell whether this will be a problem. If the device to make do with a 1-2 year battery set, then there is no problem.
So I'm totally satisfied. I was just a low-cost altimeter sought and got a fancy part with altimeter, compass, barometer, clock, alarm clock and get everything works.
