This small, very easy to use talking timer and clock times from 24 hrs. 59 min. 59 sec. It announces the time remaining every hour, until one hour is left when it announces every 10 minutes until one minute remains. Then it speaks every 10 seconds and finally every second when it reaches 10 seconds left. Six different alarm sounds are available. It meaures a small 2.4″ square and comes with a stand and magnet. Uses 2 AG13 batteries (INCL).