Well, because they inspire one to move more. The perpetual presence of the current step number, spotlighting a from the wrist, ensures that you can ride the elevator often and prefer to take the stairs that you do not travels 500 meters to the bakery by car, but on foot. That's so. And it does not matter whether the activity meter is now highly accurate or not. The number of the completed steps can finally never be high enough.
The precision but is also the biggest problem of all these devices. That's when the adeVital activity meter Activity AM 1400 with Bluetooth unfortunately otherwise. Here is counted as a step, which is definitely not one. About: working at the computer, mouse movements, and in no time you are "run" hundred steps - Sitting mind. This is extremely annoying in the long run because it makes statistics unreliable.
What remains is the knowledge that the activity meter adeVital Activity AM 1400 with a Bluetooth inspires more exercise (1st target and thus achieved), but its inaccuracy disturbs permanently. The evaluation options on apps for smartphones, however, are top notch again. And yet, who failed as a manufacturer in the core function needed rectifying. More than two stars are in this case, simply not there.