Jean De Bailliencourt - Engineering 

Product launch : A replacement PCB for your Casio F-91W that turns it into a Smartwatch!!

Join the wait list : cobalt-watch.com 

This channel showcases the different project builds. 
Most of them are temporary obsessions that I had to accomplish just to free my mind. 
My passion for technical and scientific projects drives me through these builds that I do as a hobby. 
The aim is to get more and more technical - sorry if you came for the crossbows..
Stay tuned !!