Seiko Cal. 3813 - 648

Seiko 3813-648

The Seiko 3813-648 represents an important milestone in Seiko's 1975 lineup. The Coin-Edge bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-e0118cc3b41c]

Also known as: Turtle, Silverwave

Specifications

Movement
Kinetic
Case Material
Two-Tone
Case Width
37mm
Case Thickness
9.7mm
Lug Width
21mm
Crystal
Acrylic
Bezel
Coin-Edge
Water Resistance
200m
Dial Color
Black
Jewels
24j
Frequency
36,000 bph
Power Reserve
36 hours
Year
1975

Related Models

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