Sona 20 litre, 700watt, 5 power levels, 35 minute timer, white interior. BLACK The Sona Range of Small Appliances offer the best in range and value. Crafted for those looking for a simple solution, Sona is sure to suit to the needs of the busy home, a bustling office or the student leaving home. The 700W microwave is the perfect solution for those who want a quick meal. It has 6 power levels, a 30 minute manual timer and can hold 20 litres capacity.