Seiko Cal. 4437 - 748

Seiko 4437-748

The Seiko 4437-748 represents an important milestone in Seiko's 1975 lineup. The Fixed bezel and 41mm case give it a distinctive presence on the wrist. [seikata-wm-bcc02b68b8fd]

Also known as: Monster, Tuna

Specifications

Movement
Hand-Winding
Case Material
Two-Tone
Case Width
41mm
Case Thickness
12.1mm
Lug Width
18mm
Crystal
Hardlex
Bezel
Fixed
Water Resistance
180m
Dial Color
Green
Jewels
25j
Frequency
21,600 bph
Power Reserve
60 hours
Year
1975

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