Seiko 5R64 Specifications download pdf (Page 13)

English

SPECIFICATIONS

1 Features ............................................................ 3 hands (Hour and Minute hands, Second hand or

Small second hand), Date display, Power Reserve

Indicator

2 Frequency of crystal oscillator .......................... 32,768 Hz (Hz = Hertz … Cycles per second)

3 Loss/gain ........................................................... Within 15 seconds per month (equivalento to 1

second per day) (If the watch is worn on your wrist

within normal temperature range between 5 C and

C.)

4 Operational temperature range ......................... –10 C ~ +60 C

Under a low-temperature condition (below 0 C),

always keep at least one-sixth of the watch power

shown by the power reserve indicator.

5 Driving system .................................................. Spring Drive (Automatic type with manual winding

function)

6 Hand movement ............................................... Glide-motion second hand

7 Continuous operating time ................................ Approx. 72 hours (Approx. 3 days) *If the power

reserve indicator shows the power supplied by the

mainspring is full before starting the watch.

8 IC (Integrated Circuit) ........................................ Oscillator, frequency divider, and spring drive control

circuit ( C-MOS-IC: 1 piece)

9 Jewels ............................................................... 5R64: 32 jewels, 5R65: 30 jewels

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

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Seiko 5R64 Specifications Page 13