Seiko Cal. 6688 - 740

Seiko 6688-740

The 6688-740 is a sought-after Kinetic piece from Seiko's golden era. The Bidirectional bezel and 45mm case give it a distinctive presence on the wrist. [seikata-wm-2f98f0e4df53]

Also known as: Turtle, Crown

Specifications

Movement
Kinetic
Case Material
Hardlex-Coated Steel
Case Width
45mm
Case Thickness
11.2mm
Lug Width
19mm
Crystal
Hardlex
Bezel
Bidirectional
Water Resistance
130m
Dial Color
White
Jewels
28j
Frequency
28,800 bph
Power Reserve
39 hours
Year
1969

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