CITIZEN Eco-Drive W770

54 reviews
Content rating
Everyone
10K+
Downloads
Content rating
Everyone
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About this app

*Important Notice
Thank you for using Citizen products.
As of 12/31/2027, we will no longer provide service for dedicated apps for some models and functions used in conjunction with the apps.
For details, see this link.
https://www.citizenwatch-global.com/support/im/smartwatch.html

●Overview
This is the official app for the "CITIZEN CONNECTED Eco-Drive W770" watch.
By syncing the watch and smartphone app, you will be able to receive notifications from incoming calls, messages and app notifications, through case vibration, sound and movement of the watch hands.
Link the app with IoT platform service "Riiiver" to customize the buttons on your watch to perform your favorite iiidea's/functions and use it with a single push.

For more information, please visit the following website:
https://riiiver.com/

Depending on which functions you choose, the app may access your device’s location information in the background in order to operate, even when the app is not open. For a detailed explanation of how we use any data we collect, please refer to our Privacy Policy:
https://riiiver.com/en/privacy/riiiver/
CITIZEN official app for CITIZEN Eco-Drive W770
Updated on
May 11, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • This app may share these data types with third parties
    Location, Personal info and 6 others
  • This app may collect these data types
    Personal info, Messages and 3 others
  • Data is encrypted in transit
  • You can request that data be deleted

Ratings and reviews

54 reviews
Dadadada Adadada
September 24, 2025
is there any way to improve the Bluetooth on the watch firmware or how it interacts through the app? I get constant disconnects on my phone, and it refuses to reconnect to the watch 90 percent of the time. somehow though it ALWAYS successfully connects for the pairing process and and stays connected until 1-3 notifications are received or drops out after 1-30 minutes. this issue does not seem to happen on an old phone for testing with an older Bluetooth version though.
3 people found this review helpful
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anthony mate
October 31, 2024
Update 4/5/23 - Cannot access notification controls after Riiiver server update. Cannot access Riiiver server via app at all. Please fix asap!!!! Using with W770 Proximity Pryzm. Connectivity with the watch seems to have improved. I want to like the Riiiver concept, but the website is slow as molasses. Update 10/30/24 - Cannot access notification controls & server app after Riiver service maintenance. Please fix asap!!! Still using W770 Proximity Pryzm.
10 people found this review helpful
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Jim Smith
December 21, 2024
I love the watch, but figuring out how to use this app is nearly impossible. Simplify the pairing process. Make using the app simple and intuitive. I should not need to be an expert, in order to do something as simple as pairing the watch, or updating the correct time. Only after that, will I give this app a higher rating.
2 people found this review helpful
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What’s new

Thank you as always for using our app. We have made the following updates:

- Some minor maintenance and bug fixes.