Only information I can find, on Eterna's website is, New inhouse movement, with the design that makes it easy to fix/replace parts. No e-mail to ask for information. Curious to find out its Height and Diameter, Clear or solid caseback, if black is offered...
For now: it has a diameter of 42mm, and has a displayback. It uses an in-house Eterna caliber with a domed dated mechanism, that uses two date disks onthe same layer (unlike the ETA big date movement). Regards, Marcus