Bulgari Diagono CH40STA chonograph automatic black dial 40mm steel.
model: diagono professional
reference: ch40sta
date: c. 2010s
movement: jeweled automatic
dial: black
case: round, screw down case back
strap/bracelet: stainless steel 14 links
buckle/clasp: stainless steel folding clasp
signed: case, dial, movement and clasp
size: 40mm