Citizen PROMASTER - Specifications; Model and Caliber Details

17. SPECIFICATIONS
1. Caliber No.: C320
2. Model: Combination (Analogue +
Digital) crystal watch
3. Accuracy: Within +
20 seconds per
month at normal
temperature (5°C ~
35°C/41°F ~ 95°F)
4. Operating
temperature range: 0°C ~ 55°C/32°F ~ 131°F
5. Display functions:
• Time: Hours, minutes, seconds, city name
• Calendar: Year, month, date, day, city name
• Racing Timers 1/2: 60 minute clock
• Alarms 1/2
• Chronograph: 24 hour clock (1/100 second units)
• Zone setting time
6. Added functions: Analog time/digital time
switching function
• Hand retract function
7. Battery: Battery no. 280-44,
battery code: SR927W
8. Battery Life: Approx 2 years
(assuming that the alarm
sounds for 15 seconds
per day, and the racing
timer and/or chronograph
is used once a week)