> SPECIFICATIONS (Movement)

SPECIFICATIONS (Movement)

7R87

7R88

7R89

7R99

Hour hand, minute hand, seconds hand, date, power reserve indicator

Hour hand, minute hand, seconds hand, moon phase display, power reserve indicator

Hour hand, minute hand, seconds hand, power reserve indicator

32,768 Hz (Hz = Cycles per second)

Within 15 seconds per month (equivalent to 1 second per day)

(If the watch is worn on your wrist within normal temperature range between 5 °C and 35 °C.)

-10°C ~ +60°C

Under a low-temperature condition (below 0 °C), always keep at least one-fourth of the watch power shown by the power reserve indicator.

Manual winding type

Approx. 48 hours

Oscillator, frequency divider, and spring drive control circuit (C-MOS-IC): 1 piece

Glide motion

30 jewels

32 jewels

5R77

Hour hand, minute hand, seconds hand, moon phase display, power reserve indicator

32,768 Hz (Hz = Cycles per second)

Within 15 seconds per month (equivalent to 1 second per day)

(If the watch is worn on your wrist within normal temperature range between 5 °C and 35 °C.)

-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.

Automatic winding type (with manual winding function)

Approx. 72 hours

Oscillator, frequency divider, and spring drive control circuit (C-MOS-IC): 1 piece

Glide motion

30 jewels

The specifications are subject to change without prior notice due to product improvement.