Seiko Cal. 6643 - 790

Seiko 6643-790

The 6643-790 is a sought-after Kinetic piece from Seiko's golden era. The Coin-Edge bezel and 36mm case give it a distinctive presence on the wrist. [seikata-wm-6b61ef2c0b3b]

Also known as: UFO, Sea Horse

Specifications

Movement
Kinetic
Case Material
Titanium
Case Width
36mm
Case Thickness
9.0mm
Lug Width
22mm
Crystal
Sapphire
Bezel
Coin-Edge
Water Resistance
160m
Dial Color
Black
Jewels
31j
Frequency
21,600 bph
Power Reserve
52 hours
Year
1987

Related Models

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