Seiko Cal. 6631 - 370

Seiko 6631-370

The 6631-370 is a sought-after Kinetic piece from Seiko's golden era. It features a Black dial protected by a Sapphire crystal and offers 140m of water resistance. [seikata-wm-a32eee7f9f89]

Also known as: Flighty

Specifications

Movement
Kinetic
Case Material
Stainless Steel
Case Width
36mm
Case Thickness
13.4mm
Lug Width
19mm
Crystal
Sapphire
Bezel
Fixed
Water Resistance
140m
Dial Color
Black
Jewels
19j
Frequency
28,800 bph
Power Reserve
69 hours
Year
1979

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