Nothing¶

Server pairing

An auth key obtained with root from the official app is required to pair this watch with Gadgetbridge - see the Nothing CMF server pairing page for more information.

CMF Watch Pro¶

Highly supported

Highly supportedAll features or at least all major features are supported, which is enough to cover almost all cases.

Requires CMF token to pairYou need to pair with vendor (CMF Watch) app first, then obtain the authentication key and put into Gadgetbridge. Click to learn more.

The CMF Watch Pro is highly supported by Gadgetbridge, with just a couple of known issues and missing features.

Tested on firmware 11.0.0.50, model D395.

CMF Watch Pro 2¶

Mostly supported

Mostly supportedMissing a few features, but it should be enough to cover essential daily tasks.

No-vendor pairInitial pair can be done in Gadgetbridge without needing the proprietary vendor app.

Support for the CMF Watch Pro 2 was added based on feedback from issue #3899. All features supported by the CMF Watch Pro seem to apply to the CMF Watch Pro 2.

This watch can be paired without the need for an authentication key, as of pull request #4004. This was tested on firmware 1.0.0.51.

Known issues:

Setting the time to the past crashes the watch and may cause a factory reset
Sleep time does not match between Gadgetbridge and the watch
Goals (steps, calories, distances) do not sync
Contacts are not working
Measurement system (length, temperature) is not working
Weather conditions per hour are not working

Untested features:

Calories, distance (no UI)
Heart alerts (low, high, high active, SpO2)
Watchface and AGPS upload

Tested on firmware 1.0.0.46 and 1.0.0.51, model D398.

Features¶

The following is an extensive list of all the features implemented in Gadgetbridge for the Nothing CMF Watches:

Authentication
Battery
Firmware version, serial number
Set time and timezone
Notifications, with icons
Find watch from phone
Find phone from watch
Music info and buttons
Weather
Sunrise / sunset (only supported on watch 2?)
Activity sync
- Steps
- Calories, distance (no UI)
- Heart Rate
- Stress
- SpO2
- Sleep stages
- Workouts and GPS tracks
Settings
- Goals (steps, calories, distance)
- Lift wrist to wake screen
- All-day monitoring (heart rate, SpO2, stress)
- Heart alerts (low, high, high active, SpO2)
- Time format (12h/24h)
- Alarms
- Contacts
- Workouts available on watch
- Inactivity reminder
- Hydration reminder
- Measurement system (length, temperature)
Factory reset

Known issues¶

Alarms labels do not do anything on the watch, even in official app

Missing features¶

The following feature are not yet implemented in Gadgetbridge:

Fetch model number
Firmware upgrade
Do not disturb
Set watchface from phone
Some settings
- Call reminder
- Language
Read settings from watch
- alarms
- contacts
- other settings
Activity data
- Resting heart rate
Widget setup (CMF Watch Pro 2)

Experimental features¶

The following features are implemented in Gadgetbridge, but experimental / not heavily tested.

Watchface upload¶

Watchface upload is implemented and somewhat working.

When installing a watchface on the official app, the file can be found under /data/data/com.nothing.cmf.watch/com.nothing.cmf.watch/cache/dial/ for rooted devices.

AGPS upload¶

AGPS upload is implemented, but untested. The upload process seems to follow a very similar method as watchface upload.

It is currently not known how to obtain AGPS files.