There are, I believe, two other competing designs. Some rectangular thing with krusy the klown batteries and some DIY pieces. This one though, has been through re-designs to make it as close to a reliable mainstream piece as possible. Except the 55/20mm size. The case itself is machined with precision, waterproof, mineral crystal, form factor is also as compact as can be. The first design was tested for many days before a fault was discovered with the control module if you will, the watch was then redesigned to incorporate a newer more reliable unit.
This could look real nice on a decent strap to match! I mean, if there was ever a conversation piece. I wish he would have gone bigger on the lugs and sourced a wider strap for this, it looks like a regular 18-21 sized strap.