Omega Speedmaster 38 Co-Axial Chronograph Watch (3126.96.36.199.02.001). Tachymeter function. Caliber 3330 automatic movement with 52 hours power reserve. Luminescent hands and index hour markers. Silver dial with 3 subdials, and a date window at the 6 o`clock position. Steel & Yellow Gold bezel set on a 38mm stainless steel and yellow gold case. Scratch resistant sapphire crystal on top and an exhibition case-back. Water resistant to 100M. Green leather strap with a dual folding deployment clasp.