Review (1/5): Cheap and unreliable.
I purchased the 7d head shaver and after about 2 months of semi-regular use and cleaning as specified by the manufacturer, the device can hardly get a grip on my hair to shave and has developed an incredibly irritating high pitched whine/screech to it. It was loud and annoying when I first turned it on but I could deal with it as the cost of having an electric shaver, I never expected it to be silent. This new shrieking noise is unacceptable. It always took multiple passes to get a decent clean shave on my head, but now it takes an exponentially greater amount of passes with the shaver to get anywhere close to a shave with this device. The accessories, when used with a light touch as described in the manual, have also developed structural issues and are also unusable. One can expect this device to last about 2 months before becoming garbage.