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GRUS OFFICIAL WEBSITE - Life product brand for health and welfare

Online Manual - GRS008

1 . Get started

1-1 . User manuals

There are two types of user manuals for this product.

  • Online Manual : Complete version of the instruction manual on the web(this online manual is it)
  • Handy Manual : Simplified instruction manual on paper format for quick confirmation of usage in daily use

The contents of Online Manual and Handy Manual are subject to change without notice. In case of any discrepancy between the contents of each document, the Online Manual shall be the latest version.

Check Safety and handling page before using the watch.

1-2 . Features

The main functions are as follows:

  • Automatic time and date adjustment by GNSS reception
  • Voice announcement of time and date
  • Ambient brightness detection by illumination sensor
  • Six languages support
  • Switch timezone
  • 12/24 time system switching
  • 3 volume levels + silent mode
  • Chime every hour and 30 minutes

1-3 . GNSS

GNSS, Global Navigation Satellite System, is generic term about satellite positioning system. GNSS provides information of positioning, navigation and current time.This product uses a system that receives only time and calendar signals in consideration of watch battery life.

Earth and Satellites

1-4 . Time Zone

Time zone is a regional zone that adopts a same standard time. UTC, Coordinated Universal Time, is the world's own national standard. It originates the prime meridian which is zero longitude through the former Greenwich Observatory in the United Kingdom. A time is corrected for a time difference from UTC is used as the standard time in each regional zone. Which time zone a country belongs to is determined on a country-by-country basis. In countries that use a daylight saving time system, the time zone value changes depending on a season. In addition, time zones may differ from region to region within the same country.

1-5 . Time difference table from UTC

Difference
Examples of cities
±0.0 (UTC)
London* - England
+1.0
Paris* - France / Madrid* - Spain
+2.0
Kiew* - Ukraine / Cairo - Egypt
+3.0
Moscow - Russia / Jeddah - Saudi Arabia
+3.5
Tehran* - Iran
+4.0
Dubai - UAE
+4.5
Kabul - Afghanistan
+5.0
Karachi - Pakistan
+5.5
Delhi - India
+6.0
Dhaka - Bangladesh
+7.0
Bangkok - Thailand / Ho Chi Minh City - Vietnam
+8.0
Beijing - China / Hong Kong - HKSAR / Singapore
+9.0
Tokyo - Japan / Seoul - Korea
+9.5
Adelaide* - Australia
+10.0
Sydney* - Australia
+11.0
Noumea - New Caledonia
+12.0
Wellington* - New Zealand / Suva* - Fiji
-11.0
Midway - USA
-10.0
Honolulu – USA
-9.0
Anchorage* – USA
-8.0
Los Angeles* – USA / Vancouver* - Canada
-7.0
Denver* – USA
-6.0
Chicago* – USA / Mexico City* - Mexico
-5.0
New York* - USA / Montreal* - Canada
-4.0
Santo Domingo - Dominican Republic / Manaus - Brazil
-3.0
Buenos Aires - Argentine / Rio de Janeiro - Brazil
-2.0
Fernando de Noronha - Brazil
-1.0
AZORES* - Portuguese