Seiko Cal. 5641 - 963

Seiko 5641-963

The Seiko 5641-963 represents an important milestone in Seiko's 1992 lineup. The Coin-Edge bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-a652bc5e3dd5]

Also known as: Helmet, Silverwave

Specifications

Movement
Hand-Winding
Case Material
Stainless Steel
Case Width
40mm
Case Thickness
10.3mm
Lug Width
22mm
Crystal
Sapphire
Bezel
Coin-Edge
Water Resistance
160m
Dial Color
Green
Jewels
34j
Frequency
28,800 bph
Power Reserve
37 hours
Year
1992

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