MOVEMENT: Japanese OS 20 Quartz working Chronograph movement
CASE DIAMETER: 43mm
THICKNESS: 15mm
DIAL COLOR: Metallic Black dial, Black Subdials  
CASE MATERIAL: Solid Stainless Steel 316L, PVD Black Coated
BRACELET: Leather Strap with Stainless Steel Tang Buckle
FRONT GLASS: Synthetic Sapphire, AR Coated 
BACK GLASS: Solid Case Back
HACK MOVEMENT: Yes 
CLASP TYPE: Deployant Clasp
DATE INDICATOR: At 9:00 (set via crown)

OTHER REMARKS:

Water Resistant 
Fully Functional Chronograph
Pusher at 2:00 starts/stops Chronograph
Pusher at 4:00 resets Chronograph
*Please read Watch Q&A for more details on using Chronograph movement