Seiko 5d88 Watch User Manual


 
English
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English
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This watch requires no periodic battery replacement as it is powered by the
exclusive rechargeable battery, which is completely different from conventional
batteries for watches.
This exclusive rechargeable battery is an environmentally friendly, clean energy
storage device.
CAUTION
Never install a silver oxide battery for conventional watches in place of the
rechargeable battery, which can generate heat that can cause bursting or
ignition.
POWER SOURCE (RECHARGEABLE BATTERY)
NOTES ON OVERHAUL
The watch is a precision device. If the parts run short of oil or get worn out, the
watch may stop its operation or lose time. We recommend you have the watch
overhauled periodically to keep it running accurately.
SPECIFICATIONS
1 Frequency of crystal oscillator ........................... 32,768 Hz (Hz = Hertz … Cycles per second)
2 Loss/gain (monthly rate) .................................... Less than 15 seconds (worn on the wrist at normal
temperature range between 5° C and 35° C)
3 Operational temperature range
.......................... –10° C ~ +60° C
4 Driving system
................................................... Step motor: 2 pieces
5 Display system ................................................... 24-hour, hour, minute, second, date, day of the
week, and moon phase
Power reserve display, power generation status
display, and generated power amount display
6 Rechargeable battery
.......................................... Button type, 1 piece
7 Duration of charge
.............................................. Approximately 1 month (if the watch is fully
charged)
8 Additional functions ........................................... Overcharge prevention function
9 IC (Integrated Circuit)
......................................... C-MOS-IC, 1 piece
10 Generating system
............................................ Miniature AC generator
* The specifications are subject to change without prior notice for product improvements.