A:AnswerI use it on my head every few days. Takes a few passes on the back of your head but I get a great shave every time. Very close to what I get with a regular razor and I feel hardly any stubble.
You may have to flip the top of your ear to get that area above your ear but that's it. It really gives a great shave.
A:AnswerYep. It's the same cord you plug into the base. Just unplug from the base and plug it direct into the razor. Just traveled with it recently and had it on my carry on with no issues.
A:AnswerIf you are referring to the Braun Series 7 790cc-4, the answer is no.
It comes with the shaver consisting of the removable head that pivots or can be locked into any 180° fixed position, the charger cable that plugs into wall outlets and can be used direct to the shaver or thru the cleaning/charging system to charge and/or clean, the self cleaning/charging system reservoir, one alcohol based plastic insert dish that will support 30 or so cleans before needing replaced(lemon sweet scented), a black zip-up carrying/storage case with a mesh net portion to aid in drying after cleaning, one mini-brush that fits in case with shaver inside case simultaneously, a user manual in multiple languages, and a model card that you write the date 18 months after purchasing on so that you know around when you need to replace the shaver head.
That is about everything thr braun series 7 790cc-4 comes with. Not to mention a box and a 60 day test shave period with a money back guarantee if you are not completely satisfied. The alcohol containers are about $5 around here and I believe replacement heads are $20-$30.