+ Very quiet
+ Good handling
+ Easy to clean
+ Good comb which glides smoothly over the skin
+ Thanks to the rounded sound no injuries, even when shaving under the nose without comb
- Whiskers adhere to the material
-No Travel bag included
Since I started using the BT5270, my beard is shaved evenly and thus looks much maintained. A good investment, especially because of the small difference in price for 4022, which I really wanted to buy.
My recommendation for an uncomplicated device that a well-kept beard for a good price!