Seiko Cal. 6637 - 286

Seiko 6637-286

The 6637-286 is a sought-after Hand-Winding piece from Seiko's golden era. The Coin-Edge bezel and 34mm case give it a distinctive presence on the wrist. [seikata-wm-ef8a428a4cec]

Also known as: Baby Tuna

Specifications

Movement
Hand-Winding
Case Material
Hardlex-Coated Steel
Case Width
34mm
Case Thickness
9.9mm
Lug Width
21mm
Crystal
Sapphire
Bezel
Coin-Edge
Water Resistance
120m
Dial Color
Green
Jewels
18j
Frequency
36,000 bph
Power Reserve
42 hours
Year
1967

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