Panasonic NE 1853 microwave features include:

Dual Emission Top and Bottom Energy Feed Ensures Even Heating
1800w (IEC 705) Microwave Power Output
17.9 Litre (0.63 cu.ft) Oven Capacity
Cycle Counter-records the number of operations
Programmed Option for x2 and x3 Quantity Heating
Stainless Steel Cavity and Cabinet
3 Year Manufacturers on-site Warranty
NEW Model which replaces the NE-1856 Features the Following Updates:
15 Power levels (up from 3) to allow greater choice and more accurate cooking of delicate foods
30 pre programs ( up from 20 ) including 3 stage heating, including zero power, stand function
LED interior light, so no more blown light bulbs.  The light can also be set to flash at the end of the cooking cycle, which could be a benefit in a busy, noisy kitchen.
LCD control screen replaces the old LED unit.  This is much easier to read in a bright kitchen.
10 or 20 second boost button, for dishes that are not quite up to temperature.