These scales arrived in double quick time, especially as I am I Spain and were delivered free.
Having seen a couple of reviewers complaining about its consistency and accuracy I have give mine a good test in various places to see if it does vary in readings.
Mine showed a steady 85.2kg in 3 rooms, all readings taken on same surface type, tiled flooring. To be really anal about it I then took it to the gym with me where it again initially showed 85.2Kg.
I then weighed myself holding 10, 15 and 20Kg weights and the readings increases accordingly and accurately. Based on these tests I feel quite confident that the ones I have are as good as the manufacturer claims they are.
Things to note of course when you are weighing yourself.
* Be consistent where you place the scales. Make sure they are on a level surface and nothing is beneath them.
* Try to wear the same clothing, just out of bed or the bath is a good idea
* Weigh yourself at the same time of the day, again first thing in the morning is a good time
* Once a week is sufficient, your weight changes with what you eat drink and dispose of so naturally your weight will during the day.
So far as all the body mass etc goes, it is of little interest to me and I wouldn't trust something so basic as this anyway. Having said that it was very easy to set up. There is a loud click when you put your foot on it to wake it up so you know you have placed enough pressure on it and there is adequate time between the scrolling user numbers to stop on the one you want.
If I have a gripe it is that you need to almost jump on it after setting it up before it goes to sleep again, about 5 seconds. I'm sure it wouldn't hurt the batteries for it to remain on for a minute