Seiko Cal. 6137 - 639

Seiko 6137-639

The Seiko 6137-639 represents an important milestone in Seiko's 1978 lineup. Powered by the 6137 caliber with 30j jewels beating at 36,000 bph, it delivers a 45 hours power reserve. [seikata-wm-25933e68f39c]

Also known as: Turtle

Specifications

Movement
Hand-Winding
Case Material
PVD Black
Case Width
46mm
Case Thickness
13.3mm
Lug Width
20mm
Crystal
Sapphire
Bezel
Rotating
Water Resistance
90m
Dial Color
Navy
Jewels
30j
Frequency
36,000 bph
Power Reserve
45 hours
Year
1978

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seikata-wm-25933e68f39c