In theory this timer is suitable provided that it is working properly. From day one I tested by displaying 45 seconds. Or consistently displays the timer 45 seconds. The "reset" to zero does not. I posted 2 minutes (and 45 seconds, since it can not be deleted). I tried desperately to make a reset. Not a chance. I fell back on the leaflet (French / English) that explains absolutely nothing except the use of batteries. It is no arch. To put in the trash. (User: Jean Louis Garcia)