Seiko Cal. 6139 - 991

Seiko 6139-991

This Hand-Winding model from 1986 features a 40mm Titanium case. Powered by the 6139 caliber with 20j jewels beating at 36,000 bph, it delivers a 60 hours power reserve. [seikata-wm-c6507c0dca49]

Also known as: Sportsmatic

Specifications

Movement
Hand-Winding
Case Material
Titanium
Case Width
40mm
Case Thickness
10.5mm
Lug Width
22mm
Crystal
Hardlex
Bezel
Rotating
Water Resistance
70m
Dial Color
Silver
Jewels
20j
Frequency
36,000 bph
Power Reserve
60 hours
Year
1986

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seikata-wm-c6507c0dca49