All versions of CITIZEN Bluetooth Watch

jp.co.citizen.cal.w770 · 4 versions

CITIZEN Bluetooth Watch has 4 versions listed, going back to v1.2.240.

Minimum Android version over time

From v1.2.241: requires Android 7.0+

Older versions are the way to go if your device runs an earlier Android release.

All 4 versions checked are signed with the same certificate (A4:EA:09:FC…, issued to “Citizen Watch”), so they can update one another.

Versions, newest first

v1.2.244 (2000000244) LATEST

Uploaded Jul 1, 2026 36.4 MB Android 7.0+ TRUSTED

8ba90c88aa2a37f9aa374a9ed5b73ec4

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What's new (as uploaded)

･Bug fixes. ･Stability is enhanced.

v1.2.243 (2000000243)

Uploaded Jul 31, 2026 36.4 MB Android 7.0+ TRUSTED

8e4cbad3d5322b85c47d1f35ed380e8c

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Same release notes as v1.2.244.

v1.2.241 (2000000241)

Uploaded Nov 6, 2024 37.2 MB Android 7.0+ TRUSTED

d368c84aeb473a32c03686487ccf19fc

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Same release notes as v1.2.244.

v1.2.240 (2000000240)

Uploaded Apr 9, 2026 38.1 MB Android 5.1+ TRUSTED

abd1a8261d7f2b571dc2299e2f2b76a9

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What's new (as uploaded)

- Change of specifications related with “X notification function” - Change of specifications related with “Light Level”. - Some minor maintenance and bug fixes.