I know this has been a bit cheaper before (at £1.79), but that was over a month ago, and it's now back at a good price so thought it was worth mentioning.
Simply sit the timer in the pan with the eggs and it will change colour as the eggs become 'soft', 'medium', or 'hard' boiled. The timer will even adapt to the number of eggs in the pan. Perfectly boiled eggs every time!
Egg-Per'fect Colour Changing Egg Timer changes colour as the eggs cook.
Sits in the saucepan with the eggs.
Soft and hard boiled eggs cooked perfectly every time!
Graduated scales show when eggs are soft, medium or hard by sensing heat instead of time. The sensor accounts for number of eggs, the amount of water, even the altitude at which the eggs are being cooked.