MO - The world's thinnest watch - just 0.8mm thick - has been designed using a single piece of bendy stainless steel.
The CST-01 watch is thinner than a credit card and shows the time on an electronic ink display. This E ink design uses the same technology as the screen on the Kindle e-reader.
It has a 0.5mm flexible electronic component built-in and a Thinergy Micro-Energy Cell battery that can be charged in 10 minutes and has a lifetime of 15 years.  The CST-01 is powered by an energy-efficient Seiko Epson System on a Chip (SoC).
To make the watch ultra-thin it doesn't have any knobs or buttons.
The CST watch is made by the Chicago-based firm Central Standard Timing, and is the brainchild of Dave Vondle. 
The CST-01NR has a black front and a black coated stainless steel band and the CST-01RG has a black front and a rose gold coated stainless steel band.
These two models cost £76 ($119).
To charge all models and switch between 12-hour and 24-hour formats, customers also need to buy a base station for £22 ($35).
The unit is powered with an included micro-USB cable that can be plugged into any standard USB port.
To plug the station into a wall plug, customers can buy the Universal Wall Adapter for £10 ($15).