dB or decibels refers to how quiet (or noisy!) a fridge freezer is. A reasonable level of noise would be anything under or around the 40 mark. Anything over 50 decibels would likely be a noisy distraction in most homes. If you have an open plan home, you'll likely be more concerned about the noise levels produced.
All fridges and fridge freezers in the UK have an energy efficiency rating to show you how economical they are. Look around any show room and you'll see the familiar colour-coded Energy Rated label. Due to a lot of work in this aspect by manufacturers you'll find that most new fridge freezers have an energy efficiency of A or A+, although the scale technically runs from A++ to G. Standardised tests are carried out by trading standards to decide what the energy rating of each product should be. Often more expensive products have a better energy efficiency due to higher quality components being used. The Neff K4254X7GB has an excellent energy efficiency rating of A+.
A growing number of Fridge Freezers, such as the Neff K4254X7GB have anti-bacterial protection built into their design. This is a protective coating that is applied to the fridge part of the unit and kills bacteria. While effective, it shouldn't be used as a substitute for regular cleaning of your fridge freezer. It's recommended that you keep raw and cooked meat on different shelves and also constantly check and remove expired foods.
This is a brilliant idea that allows the doors on a fridge freezer to be attached so that they open to the right or left. This is particularly handy if you are planning to install the unit behind a door, or close to a wall. (Or simply if you prefer the door to open a certain way!) The Neff K4254X7GB features fully reversible doors.
