Seiko Cal. 6397 - 637

Seiko 6397-637

The 6397-637 is a sought-after Automatic piece from Seiko's golden era. Powered by the 6397 caliber with 25j jewels beating at 36,000 bph, it delivers a 51 hours power reserve. [seikata-wm-5e8d63ade3f0]

Also known as: Turtle, Bellmatic

Specifications

Movement
Automatic
Case Material
Titanium
Case Width
45mm
Case Thickness
13.5mm
Lug Width
20mm
Crystal
Acrylic
Bezel
Rotating
Water Resistance
120m
Dial Color
Champagne
Jewels
25j
Frequency
36,000 bph
Power Reserve
51 hours
Year
1972

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