The three timers are really practical. The usage is very intuitive although in the manual potassant we easily spell. The display is very readable and powerful magnet. The big flaw: the magnet is made of one piece, in the middle of the back of the timer, and protruding manner. So, if you press too hard on the buttons (located on edges) the timer "wins" despite the strength of the magnet et..tombe. Fortunately, there is strong! 4 magnets (very small) placed at each corner would have been preferable. Without that, it was 5 stars.