This is an authentic Omega wristwatch. The watch has been professionally serviced and comes with a two-year warranty, box, and operating instructions book.

Brand: Omega Speedmaster
Model Number: 3210.50.00
Material: Stainless Steel
Movement: Automatic (mechanical)
Case: 37.7mm wide (not including the crown)
Band width: 17mm
Lug Width: 18.1mm
Bracelet Inner Circumference: 7 3/4"
Closure Type: Deployment Clasp
Total Weight: 136.9 Grams
Stamps: Omega Speedmaster Automatic, Swiss Made, Stainless Steel, 1562/850
Features:
Three Subdials (a seconds counter, a 30-minute recorder, and a 12-hour recorder)
Hours marked by dashes capped by luminous dots
Luminous hands
Date window