The strength it ES-RF31 is very clear in its price-performance ratio: The shaver has a decent product and shave quality at an affordable price. The razor fits comfortably in your hand, the shave is simple and has been thoroughly for an electric razor. If're upgrading from the razor, it initially requires some familiarization in the handling and the skin has to get used to the electric shaver, but then does the shaver perfectly his work. The cleaning of the shaver is also simple: It is easy to open and all components can be washed away with water.
Refrain you have in this price range, however, a pleasant extras such as a charging cradle that would facilitate the loading + storage of the shaver.
All in all, a strong buy recommendation for anyone who wants to spend too much money on a razor and put primarily importance to a proper shave.
