Setting Instruction Stopwatch Feature Press the"MODE" button to enter stopwatch. Press the"START" button to enter Timer Mode. Press the"START" button to stop the stopwatch. Press"RESET" button to recover. Alarm Feature Press"MODE" twice and press"START" to add hour. Press"RESET" and press"START" to add minute. Press"MODE"button to finish alarm setting. Hole"RESET" and press"START" to open / close the alarm. (When alarm is on, the alarm sign"ALM"appears. When alarm is off, the alarm sign"ALM"disappears.) When the alarm ring , press"RESET" to turn it off; Press"START"to pause it, and it will ring again 5 minutes later. Time Setting Press "MODE" three times to enter Time Setting. Second will count from 0-59.Press "RESET" to set up Minute/ Hour/ Day/ Month/ Week. Press "START" to add the number. Press "MODE" to finish setting. (Note: When"AM" /"PM" appeared, 12-hour system opened. When"AM" /"PM" appeared, 24-hour system opened.) Chime Feature In normal mode, hold"RESET" and press"MODE" (When week all appear, hours chime open. When disappear, hours chime close.) Note Hold "START" button to check the date. Hold "RESET" button to check the alarm. More setting details, please contact me any time.