Seiko 5 Sports 6139-8010

The Seiko 5 Sports 6139-8010 is an iconic and highly sought-after vintage chronograph wristwatch model produced by Seiko in the early 1970s. This watch is among the sports chronograph models of the "Seiko 5" series and has features that reflect the technological developments of its time. One of the most important features of this product is that the casing coating is NSB alloy. This alloy is sprayed onto the case in the form of a hard material similar to ceramic. (Surface hardness is high strength and is highly resistant to small scratches, Hv = approximately 700-1000). If you like black and especially vintage watches, this watch is one of the rare options that allows you to use the Black color without compromising its appeal. The Seiko 5 Sports 6139-8010 is a vintage Seiko watch with an automatic movement and a sporty design from the 1970s. If you are interested in vintage Seiko watches, you can consider this model. The product you are reviewing was produced in 1972 and is 53 years old today.

PROFESSIONAL FULL SERVICE. Since the mechanism is completely disassembled, each part is cleaned, oiled and its sensitivity is adjusted, your watch will work without any negative surprises. (It does not require maintenance for 3 years unless exposed to adverse conditions.)
Product Status: Tested, all functions work.