Citizen W770 - Specifications

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CAUTION
Always Keep Your Watch Clean
• Rotate the crown while it is pressed in fully and press the buttons periodically so they do not become stuck due to
accumulations of foreign matter.
• The case and band of the watch come into direct contact with the skin. Corrosion of the metal or accumulated foreign
matter may result in black residue coming from the bracelet when exposed to moisture or perspiration. Be sure to keep
your watch clean at all times.
• Be sure to periodically clean the bracelet and case of your watch to remove accumulated dirt and foreign matter. In
rare circumstances, accumulated dirt, foreign matter may cause irritation with the skin. If you notice this, discontinue
wearing the watch and consult your physician.
• Be sure to periodically clean foreign matter and accumulated materials from the metal band, synthetic rubber strap
(polyurethane) and/or metal case using a soft brush and mild soap. Be careful not to allow moisture on the case if your
watch is not water resistant.
• Leather bands may become discolored by perspiration or dirt. Always keep your leather band clean by wiping with a dry
cloth.
Caring for Your Watch
• Wipe any dirt or moisture such as perspiration from the case and crystal with a soft cloth.
• For metallic, plastic or synthetic rubber (polyurethane) band, clean it with soap and a soft toothbrush. Be sure to
thoroughly rinse the band after cleaning to remove any soap residue.
• For a leather band, wipe off dirt using a dry cloth.
• If you will not be using your watch for an extended period of time, carefully wipe off any perspiration, dirt or moisture
and store in a proper location, avoiding locations subject to excessively high or low temperatures and high humidity.
<When Luminous Paint is used for your watch>
The paint on the dial and hands helps you with reading the time in a dark place. The luminous paint stores light
(daylight or artificial light) and glows in a dark place.
It is free from any radioactive substance or any other material harmful to a human body or environment.
• The light emission will appear bright at first and then diminish as time passes.
• The duration of the light (“glow”) will vary depending on the brightness, types of and distance from a light source,
exposure time, and the amount of the paint.
• The paint may not glow and/or may dissipate quickly if exposure to light was not sufficient.
Specifications
Model
W770
Type
Analog solar-powered watch
Timekeeping
accuracy
(without reception)
Average monthly accuracy: ±15 seconds when worn at normal
operation temperatures between +5°C (41°F) and +35°C (95°F)
Operating
temperature range
‒10°C (14°F) to +60°C (140°F)
Display functions
• Time: Hours, minutes, seconds, 24-hour
• Calendar: Date, day of week
Maximum run time
from full charge
• After charged fully, the watch runs without additional charging
when power save functions for 7.5
hours a day:
when power save functions all
the day:
• Approximately 9 months (using
with a smartphone)
• Approximately 1.5 years (using
with no smartphones)
Approximately 4 years
• Power reserve upon insufficient charge warning function:
Approximately 10 days
Battery
Rechargeable cell (lithium button cell), 1pc.
Additional functions
• Solar power function
• Overcharging prevention function
• Insufficient charge warning function (two-second interval
movement)
• Power reserve indication (in four levels)
• Energy saving function (power save feature)
• Indication functions about smartphone connection
Connection status indication (ON/OFF)
Indication of ongoing communication processing (ACT)
Notification indication (CALL/INFO/LL)
• Automatic time information reception function
• Vibration function/vibration test function
• Alarm function (ALM ON/OFF)/Alarm monitor function
• Chronograph (up to 60 minutes in one second increments)
• Local time
• Perpetual calendar (until February 28th, 2100)
• Antimagnetic feature
• Impact detection function
Specifications and contents of this booklet are subject to change without prior
notice.
CITIZEN Bluetooth Watch W770 Instruction manual