The Braun Series 7 Shaver 720s-4 is part of the Electric razor
test program at Consumer Reports. In our lab tests, Electric razor
models like the Series 7 Shaver 720s-4 are rated on multiple criteria, such as those listed below.
Shaving: Shaving is based on assessments of closeness of shave and ease of shaving difficult areas.
Cleaning: Cleaning refers to the ease of cleaning the device.
Noise: Noise is the users' judgement of the annoyance of a model's sound.