Seiko Cal. 4438 - 812

Seiko 4438-812

The 4438-812 is a sought-after Quartz piece from Seiko's golden era. The Bidirectional bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-4bfbb8797f8c]

Also known as: Sportsmatic, Baby Tuna

Specifications

Movement
Quartz
Case Material
Hardlex-Coated Steel
Case Width
37mm
Case Thickness
10.4mm
Lug Width
21mm
Crystal
Sapphire
Bezel
Bidirectional
Water Resistance
60m
Dial Color
Green
Jewels
17j
Frequency
36,000 bph
Power Reserve
58 hours
Year
1965

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