Concept Centre Seconds watches, such as my Cosmic Green and Robin's Funky blue, are in the same 40.8mm case as the regular Endeavour Centre Seconds models. (Btw, Robin's Funky Blue Concept is in stainless steel, a limited edition of five only).

The case of Moser Concept watches without second hands is the same as the case of regular 38.8mm Endeavour Small Seconds models.
In other words, Alfred's palladium Concept Funky Blue is in the same case shape as my 38.8mm Endevour Samll Seconds, as shown below.
Hope I didn't make things more confusing.
Cheers,
Luis