Citizen H990 Eco-Drive Satellite Wave User manual

1
Thank you for your purchase of this Citizen watch.
Before using the watch, read this instruction manual carefully to ensure
correct use.
After reading, be sure to store this manual in a safe place should it be
needed for future reference.
The model name of this watch is “H990” (Eco-Drive Satellite Wave).

2
Safety precautions
This manual may contain certain safety advisories. Your watch should be used in
accordance with these advisories at all times to ensure optimal enjoyment of your
watch and to prevent injury to yourself, other persons and/or damage to property.
■ Safety advisories are categorized and depicted in this manual as follows:
DANGER Highly likely to cause death or serious injury
WARNING May cause serious injury or death
CAUTION May or will cause minor or moderate injury or damage
■ Important instructions are categorized and depicted in this manual as follows:
Warning (caution) symbol followed by instructions that should
be followed and/or precautions that should be observed.
Warning (caution) symbol followed by prohibited use and/or
operation advisory.

3
<Notes before use>
Case
Be careful not to knock or inflict strong shocks on the watch as part
of the case is ceramic.
Protective stickers
Prior to the watch being shipped from the manufacturing plant, its glass, case,
metal band, and metal parts of the clasp are covered with stickers to protect them
from getting fingerprints or scratches during transit from the plant to the store.
If the watch is worn without first removing these stickers, perspiration or moisture
may enter the gaps between the protective stickers and the parts, which may result
in a skin rash and/or corrosion of the metal parts.
For this reason, please be sure to peel off the stickers before wearing the watch.

4
Before using the watch
The following must be done before using the watch:
●Checking the power reserve Page 14
Check the charge level of the watch.
●Setting the World Time Page 17
Select the city or time difference for which you want to indicate the time and
date.
●Receiving the satellite time signal Page 28
Correct the time by receiving the satellite time signal.

5
This watch has a rechargeable cell which is
charged by exposing the dial to light.
Expose the dial to direct sunlight regularly to
charge the watch.
For details of charging, see pages 10 to 13.

6
Before using the watch..............4
Component identification..........8
Recharging your watch............ 10
Checking the power reserve..... 14
Using the world time function ... 16
Switching Summer Time and
standard time ...................... 21
Before receiving the satellite time
signal................................... 24
Table of contents
Receiving the satellite time
signal................................... 28
Checking and adjusting
the leap second .................... 35
Checking and adjusting the
rollover number ................... 38
Adjusting the time/calendar
manually.............................. 42
Checking and correcting the
current reference position..... 46

7
Troubleshooting...................... 50
Resetting the watch
—All Reset .......................... 55
Eco-Drive (solar powered) Watch
Handling Precautions ........... 58
Water resistance ..................... 62
Precautions and usage
limitations ........................... 65
Maintenance........................... 70
Information ............................ 71
Specifications.......................... 72

8
Component identification
Date indication
Upper right
button ( )
Lower right
button ( )
Crown
Hour hand
Reception result
indication (OK/NO)
Reception-in-progress
indication (RX)
Second hand
City indication
Minute hand
24-hour indication
Function indication
• Day of the week
• Summer time indication
(ON/OFF)