Swiss made Mechanical Automatic (Powered by wrist motion). Cal.3888.
Functions:
Chronograph / Tachymeter
Combination satin/polished finish.
Factory Logo engraved/embossed. Sport style, screw-down (threaded).
Solid stainless steel. Fit up to 6-3/4 inch wrist
Butterfly style ( hidden deployant ), center opening. Factory Logo engraved/embossed.
39mm (not including crown)