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Cobalt Watch
A Casio F91W with a Voice AI module inside + Assistant App
Cobalt Watch — The first AI voice assistant retro smartwatch. A modded Casio F-91W with built-in microphone, NFC, accelerometer. Send a WhatsApp, set an alarm, create a calendar event, start navigation. Hands-free, screen-free, no daily charging.
Hey PH — I'm Jean, solo founder behind Cobalt.
The idea started simple : I wanted voice commands on my wrist without carrying a smartwatch. The F91W felt like the right shell — minimal, reliable, universally recognized.
The hardest part wasn't the firmware. It was fitting a mic, and a BLE module in exactly the same footprint as a 35-year-old PCB, without touching the case.
First external PCB batch just arrived. Launching on Kickstarter september 1st.
Happy to answer any questions about the hardware or the stack.
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About Cobalt Watch on Product Hunt
“A Casio F91W with a Voice AI module inside + Assistant App”
Cobalt Watch was submitted on Product Hunt and earned 8 upvotes and 1 comments, placing #56 on the daily leaderboard. Cobalt Watch — The first AI voice assistant retro smartwatch. A modded Casio F-91W with built-in microphone, NFC, accelerometer. Send a WhatsApp, set an alarm, create a calendar event, start navigation. Hands-free, screen-free, no daily charging.
Cobalt Watch was featured in Wearables (182.5k followers), Artificial Intelligence (470.8k followers), GitHub (41.3k followers) and Tech (625.4k followers) on Product Hunt. Together, these topics include over 291k products, making this a competitive space to launch in.
Who hunted Cobalt Watch?
Cobalt Watch was hunted by Jean de Bailliencourt. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
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Jean de Bailliencourt