Seiko 7T84 Manual - Page 20

English SPECIFICATIONS 1 Frequency of crystal oscillator 32,768 Hz (Hz = Hertz...Cycles per second) 2 Loss/gain (Monthly rate Less than 15 seconds when used on the wrist within normal temperature range (5 ºC ~35 ºC) 3 Operational temperature range Between -10 ºC and +60 ºC 4 Driving system Step motor 4 pieces 5 Display system Time Hour, minute and small second hands in 1-second increments Yacht timer/Timer Center hand: 1-minute and 1-second increments (when the remaining time is less than 1 minute) exclusively for timer Small watch: 1-second increments Stopwatch Center hand: 1/5-second increments Small watch (hour and minute hands): 1-minute increments Alarm Small watch : Regular alarm time Local time Small watch : Local time in 1-minute increments 6 Battery SEIKO SR927W, 1 piece 7 Battery life Approximately 3 years If the yacht timer is used less than 6 hours per week, the timer is used less than 15 minutes per day, the stopwatch is used less than 60 minutes per day and the alarm sounds less than 40 seconds per day. 8 IC (Integrated Circuit C-MOS-IC: 1 piece * The specifications are subject to change without prior notice for product improvements. 40