Have all essays test times briefly tested, work so cut all well as they should.
Battery is charged quickly (cutting hair and beard once a week) battery lasts me for 2 times use, then I invite a precaution because times with infected cord can not use the razor. (Is a security measure because the shaver is waterproof and is also sold as described). So you have almost no problems with the clean up.
And now to the "fast" and the point deduction. Between the razor and the various heads is greased to most likely to reduce the friction between the motor shaft and the head, thus far all well and good. But there you collect hair and sticking to the fat, but not cut each time you would have to make at some point there clean, then the hair would indeed gone as well as the fat. This is in my opinion the weak point in this device, wait times as long to set the appliance.