Seiko Cal. 6639 - 738

Seiko 6639-738

The 6639-738 is a sought-after Kinetic piece from Seiko's golden era. It features a Silver dial protected by a Mineral crystal and offers 120m of water resistance. [seikata-wm-e8842c88d088]

Also known as: Turtle, Tuna

Specifications

Movement
Kinetic
Case Material
Stainless Steel
Case Width
41mm
Case Thickness
11.0mm
Lug Width
19mm
Crystal
Mineral
Bezel
Coin-Edge
Water Resistance
120m
Dial Color
Silver
Jewels
26j
Frequency
36,000 bph
Power Reserve
60 hours
Year
1993

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