great! can't give it Five stars without a few more interval buttons, since often I'm just timing 2 or 4 mins peaches and 10 min talks. I would suggest radial "time-add" buttons at the top for 0,1,2,3,4,5,15,30,60,120 mins, and radial buttons at the side or bottom to add 1,5,10 seconds and "repeat last" to reset to last start used. It would be useful if pressing the zero mins button, then pressing a 30 min button 3 times added a 90 minute countdown, ready to start.