User manual CITIZEN WATCH C720

[. . . ] 1 M 6 9 TME CHR MODE TMR AL-2 AL-1 SET 3 7 TEMP. OFF 40 U 30 TH -10 0 10 SUN TU20 E 50 60 SAT 5 AM B 2 8 SET A 4 This watch is a combination quartz watch with a world time function, which displays the time in 30 world cities and the UTC (Coordinated Universal Time), and a thermometer function. It also includes an EL (electroluminescence) light function. English 1 CONTENTS NAMES OF PARTS . Temperature measurement range and accuracy . Switching between Celsius/Fahrenheit display . [. . . ] CHRONOGRAPH MODE The chronograph is capable of measuring and indicating a maximum of 23 hours, 59 minutes, 59 seconds and 999 milliseconds in increments of 1/1000 second. After 24 hours, it stops with a reset display of "00°00'00"000". The chronograph can also measure split time (elapsed time). [Chronograph reset display] M TME CHR MODE TMR AL-2 50 60 40 SAT U 30 TH A. Total elapsed time measurment (1) The chronograph starts or stops each time button A is pressed. (2) To reset the chronograph, press button B after it is stopped. B. Split time measurment (1) The chronograph starts or stops each time button A is pressed. (2) Press button B during a time measurement, and the watch shows a split time for 10 seconds. While a split time is shown, "SPLIT" will blink. Each time button B is pressed, the chronograph shows the latest split time. (3) To reset chronograph, press button B after it is stopped. B Reset SET AL-1 Measured time (milliseconds) A -10 0 10 SUN TU20 E Measured time (hours, minutes, seconds) OFF Measurement A B Stop *1: Automatically returns to measurement mode after 10 seconds. B SET A B *1 Split time 22 23 <Changing the mode during time measurement in chronograph mode> Even if button M is pressed during a time measurement in chronograph mode and mode is changed, time measurement is continued internally. The measured time is shown when the mode is returned to chronograph again. However, if the time measurement is continued for more than 24 hours, the chronograph stops at the reset state. * Confirmation sound and EL light At the time of start, stop, split time check or reset operation in chronograph mode, a confirmation sound is heard. At the time of stop or a split time measurement, the EL light is turned on with the sound. Split time: Elapsed time from start point Split time Split time 9. Methods of measurement As described below, there are two methods of measuring temperature. The most recently measured temperature is displayed in the Time mode (approximate temperature is graphically displayed in both the "time display" and the "city selection display") and in the Timer mode. Also, switching between Celsius display (°C) and Fahrenheit (°F) display is possible. <Automatic temperature measurement> Temperature is automatically measured every hour on the hour, with the temperature display then being updated. However, measurement will not be carried out if the Chronograph mode or Time/Calendar mode is in the adjustment mode (blinking display) at measurement time. [. . . ] · Replace the battery as soon as possible if the service life of the battery has expired. Leaving a depleted battery in the watch may result in leakage, which can damage the watch severely. CAUTION: Operating environment · Use the watch within the operating-temperature range specified in the instruction manual. Using the watch where temperatures are outside the specified range, may result in deterioration of functions or even stoppage of the watch. [. . . ]