Cal. No. W770 Riiiver

W770 Riiiver

Introduction for new visitors


Illustrations for explanation may differ from the actual appearance of the watch you purchased but the difference does not result in functional difference.

On the smartwatch

This watch is a smartwatch, which is able to communicate with a smartphone through Bluetooth.

The dedicated app “CITIZEN Eco-Drive W770” is required to connect it with a smartphone. Download the app from links below and install it on the smartphone.

CITIZEN Eco-Drive W770

About Riiiver

This watch is compatible with Riiiver.

Riiiver is a service which connects a watch to the Internet through the dedicated app on your smartphone. You can use a watch in more various ways by adding functions utilizing information on the Internet.

Bluetooth 4.0 wireless technology

Use of the Bluetooth communication technology is not legally permitted in some countries or regions.
See below to confirm the list of countries where Bluetooth is legally available.


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

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