Seiko Cal. 6643 - 675

Seiko 6643-675

The Seiko 6643-675 represents an important milestone in Seiko's 1980 lineup. It features a White dial protected by a Acrylic crystal and offers 160m of water resistance. [seikata-wm-98f20a7cdc0f]

Also known as: Sportsmatic, Baby Tuna

Specifications

Movement
Spring Drive
Case Material
PVD Black
Case Width
36mm
Case Thickness
12.9mm
Lug Width
19mm
Crystal
Acrylic
Bezel
Coin-Edge
Water Resistance
160m
Dial Color
White
Jewels
25j
Frequency
28,800 bph
Power Reserve
66 hours
Year
1980

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