Seiko Sports Chronograph

Seiko 7A28-7049 Sports Chronograph AKA The Seiko Speedmaster
 
This watch has an interesting history as I'm sure you know if you are looking at it!  This was the first quartz chronograph with analog registers and Seiko considers it to be one of it's most important models!  The movement has no plastic parts and was built to be repaired, which was uncommon given that most quartz moevements are designed to be fully replaced.  They even went as far as to sell parts for it although I am sure they are now only available on the second hand market. It's 40 years old in good used shape. The bezel shows marks, the crystal has minor but polishable marks as well. The case shows signs of use but is in decent shape and the bracelet is much the same of course with the clasp showing the most wear.  
 
Case Size: 40mm
Case Material: Steel
Crystal: Hesalite 
Lug Width: 20mm
Movement Type: Quartz
Complications: Three Register Chronograph with Split Timer