more efficiency than the silk épil 7

I could compare with the old model (silk épil 7) and this one deserves to be used in place of the old.
His wider head allows for less passage for more effective hair removal, it captures more hair and smaller size, it seems to spin faster than the previous model, hair removal takes me less time with this model. In addition to the old model I tweeze the bottom of my legs because I was afraid too much pain from the knees, with this one I could go to the thigh without real pain, some tingling but nothing really painful, the system A small flat small massaging teeth leaves traces type scratches on my legs, but they all fade like small red spots after waxing.
Accessories are useful for sensitive areas.
Being able to use it under water is a good thing, as it can be used without being connected to a sector.
Autonomy is correct, about 40 minutes (it will be against the charge time to continue because not usable AC)
The facial brush is nice but I have not enough experience to prove its effectiveness. (This one works with batteries)