Content, but altimeter can not be calibrated

For the price a decent device. However, one needs to know to the altimeter function that these can not be calibrated. Ie you get either a pre-programmed in the device height displayed (in weather-related variations in air pressure deviates from the actual and indicated in the maps height) or can be the height to zero next to then determine the relative height difference during the tour. For hiking, the option would be to set a defined height and thus the height display to calibrate helpful.