Case size: approx. 29mm x approx. 29mm

Lug to lug: approx. 39mm

Lug width: approx. 17mm

Arm circumference: Approx. 195mm maximum

Crown: GP mark engraved genuine

Case material: SS (stainless steel)

The daily difference at the time of time grapher measurement was about -12 seconds.

Fully wound the mainspring and placed it flat: Confirmed to work 24 hours a day.