CITIZEN Bluetooth Watch (Movement: W770)

CITIZEN Bluetooth Watch


Android OS 5.1- 8.0
iPhone iOS 9.3- 11.3
Optimized for iPhone 5 or greater.
Bluetooth 4.0- (Bluetooth Low Energy)

We have confirmed that the app does not work normally under the following OS.
iOS : 11.0 / 11.1


When your smartphone is not compatible with the dedicated app, the app cannot be installed.

Even if your smatphone is under the conditions above, there is no guarantee to use the dedicated app correctly on your smartphone.

Even if the watch cannot receive the time information from your smartphone through the dedicated app, the watch keeps ±15-second monthly accuracy.

After the end of manufacturing the watch, the update of the dedicated app might be stopped.




CITIZEN Bluetooth Watch (W770) connects to your smartphone using Bluetooth wireless technology to provide you with various unique functions. Even when not connecting to your smartphone, the watch can work as an analogue Eco-Drive watch with chronograph function. Because the watch emits radio waves for Bluetooth connection, the watch shall be governed by the laws and regulations concerning radio wave in the country or region it is used. This product is compliant with the laws and regulations below:

United States:
FCC (Federal Communications Commission)

R&TTE Directive

Radio Act

ACMA (Australian Communications and Media Authority)

New Zealand:
MED(Ministry of Economic Development )

NCC(National Communications Commission)

South Africa:
ICASA (Independent Communications Authority of South Africa)
SABS (South African Bureau of Standards)

NOM (Norma Oficial Mexicana)
IFETEL(Instituto Federal de Telecomunicaciones)

Canada: IC (Industry Canada)

China: SRRC(State Radio Regulatory Commission)

Panama: ASEP (Autoridad Nacional de los Servicios Públicos)

You can also use the watch in Hong-Kong.

Android is a trademark of Google Inc.

iPhone is a trademark of Apple Inc.

iOS is a name of an operating system of Apple Inc. IOS is a trademark or registered trademark of Cisco in the U.S. and other countries and is used under license.

The Bluetooth® word mark and logos are registered trademarks owned by Bluetooth SIG, Inc.