AcuRite Digital Countdown Timer #00534 Start/Stop/Minute/Second/Reset buttons Very good condition. Maybe a couple very small scratches. Tested and works well. Requires one AAA battery (not included). General Timer Description: This is a countdown timer (this means that when the timer reaches 00:00 it will sound an alarm). The alarm will sound for 1 minute at 75 db. INSTRUCTIONS FOR USE The timer is "always-on". In sleep mode, LCD will display 00:00:00. This will not drain the battery. MINUTES: Press the "SET MINUTES" button until the desired number is reached. Hold the "MINUTES" button down to activate "rapid advance". SECONDS: Press the "SET SECONDS" button until the desired number is reached. Hold the "SECONDS" button down to activate "rapid advance: START/STOP: Pressing the "START/STOP" button without entering a time causes the timer to start counting up. Pressing the "START/STOP" button after entering a time will cause the timer to start counting down from the time entered. CLEAR: Press the "CLEAR" button to clear the time displayed. When the timer is set but NOT running: Press the "START/STOP" button to begin counting down from the time entered. When the timer is running: Press the "START/STOP" button to stop the countdown. General Timer Description: This is a countdown timer (this means that when the timer reaches 00:00 it will sound an alarm). The alarm will sound for 1 minute at 75 db.