A digital watch fitted with Cobalt, on a wrist. A finger holds the button, the display shows “rEC” and the counter 0:02.

Minimalist connected watch

Retro watches with voice commands.

Cobalt reinvents the classic digital watch by building a voice assistant into it. Press and speak to your wrist to note an idea, start an action or ask a question, without ever taking out your phone.

Watch the demo

In brief

Battery life
6 months
Weight
21 g
Case
Black resin
Phones
Android and iOS
Designed and assembled
in France
The Cobalt board
Pre-order · soon

The board

Your digital watch becomes a connected watch with voice commands. One button for the microphone, two buttons for music and volume. Press and speak: all the compatible voice commands.

Voice commands Fit it yourself in 10 minutes

Compatible with the Casio F-91W. Casio notice

Pre-order · soon

Pre-assembled watch

The board, already fitted in the watch. Ready to wear as soon as you open the parcel: all that is left is to install the app.

Voice commands Ready to wear

Demo

The watch and the app, side by side.

The Casio F-91W is shown here only to illustrate compatibility with our board. We make the board, not the watch.

Comparison

Cobalt next to Sensor Watch and Ollee Watch.

Comparison of the Sensor Watch Pro, the Ollee Watch one and Cobalt Watch
Sensor Watch ProOddly Specific Objects Ollee Watch oneOllee Watch Cobalt WatchCB-91AI
Custom displayYes Yes Yes
AccelerometerYes Yes Yes
TemperatureYes Yes Yes
RGB LEDYes Yes Yes
MicrophoneNo No Yes
NFCNo Programmable tag, optionalComing
Battery life1 to 2 years10 months to 3 yearsUp to 6 months
Linked to an appNo Ollee appCobalt Link
Voice commandsNo No Yes

Sensor Watch Pro (Oddly Specific Objects) and Ollee Watch one, according to the information published by their makers, October 2026. The names and logos belong to their owners.

The screens

The screens of the watch.

The watch's display shows the day and the time, 11:25.

The time

The day, the date and the time, in 12 or 24 hours.

The watch's display shows a temperature of 20 °C.

The temperature

The one the board measures, in degrees Celsius.

The cell level

What is left in the CR2016.

Pairing

The state of the link with the phone.

The watch's display shows “rEC” and the counter 0:02.

Recording

“rEC” and a counter that runs for as long as you speak.

The Casio F-91W is shown here only to illustrate compatibility with our board. We make the board, not the watch.

Cobalt is an independent project. It is not affiliated with Casio Computer Co., Ltd. and is not endorsed by Casio. “Casio”, “WR” and “F-91W” are trademarks of their respective owners, named only to indicate that our board is compatible.

Read the full Casio notice