I had a different model of the same company and have it further away to a friend, and I gained this model. I have used it for the oral examination because I had exactly 60 minutes of preparation time and did not want a timer which will beep loudly at the end. Exactly does this device namely, when it is on mute. The 3 Timer specifications are totally practical and sufficient for normal home use from. The timer will initially still green flashing (also, if you put it out loud) to zero, then it beeps for about 1 minute rather noisy (120 sqm apartment is by sonication) He always blinks red, and then it continues to run high. This is high are good, because you know how long the time is exceeded. adversely, I find that it goes to 90 min so and then stops himself. The device can not be switched off. Another disadvantage is that I find difficult to set the display to 0. You have to press 2 buttons simultaneously and sometimes I succeed not so good when he is hanging on the wall. Absolute advantage, however: he is dependent, and is, that is the extent one can use him super. For me it was a stroke of luck and a strong buy recommendation