Seiko Cal. 3883 - 637

Seiko 3883-637

The 3883-637 is a sought-after Hand-Winding piece from Seiko's golden era. The Coin-Edge bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-c7521cbc0d6f]

Also known as: Tuna, Bullhead

Specifications

Movement
Hand-Winding
Case Material
Hardlex-Coated Steel
Case Width
37mm
Case Thickness
15.0mm
Lug Width
22mm
Crystal
Hardlex
Bezel
Coin-Edge
Water Resistance
40m
Dial Color
Silver
Jewels
20j
Frequency
21,600 bph
Power Reserve
61 hours
Year
1999

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