1. It has a setting for use before you get into bed, which heats the bed up in five minutes. It would be far too hot to sleep on this setting (and the instructions warn that it would be dangerous to do so) but it is very pleasant when you first get in.
2. When I first started using electric blankets, many years ago, you were told not to put anything over them, other than a thin cover. This one specifically advises you to put a normal blanket over the top. Maybe this is true of all electric overblankets now, I don't know.
1. Someone has found it necessary to justify their job by redesigning the control, which on previous blankets worked perfectly OK, with the result that it is now much more awkward to use. When you switch it on, you have to wait a few seconds while the handset indicates each setting in turn before settling down at the version you last had it on overnight, when what you probably want is the 'fast heat' setting referred to above. A more significant problem is that if you wake in the night because you have used too warm a setting, you can't just rotate a wheel on the side of the control, as you could with the previous blanket we used; first of all you have to locate the touch pad which controls the settings, then you have to keep pressing until it has gone all the way round the dial to the setting you want, which is probably one less than the one you had it on previously. By now you are wide awake.
2. I don't know why, but the heating element on both this electric blanket and the one we had previously stop at about ankle level, so your feet are left to freeze.
3. It's expensive (to buy. We haven't had it long enough yet to find out about running costs).