Seiko 7T84 brochure Specifications

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	Hour, minute and small second hands in 1-second
	Time
		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 sec-
		onds per day.
8	IC (Integrated Circuit)	C-MOS-IC: 1 piece

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* The specifications are subject to change without prior notice for product improvements.