Seiko Cal. 4438 - 358

Seiko 4438-358

This Quartz model from 1989 features a 37mm Stainless Steel case. The Bidirectional bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-e3487f1aa470]

Also known as: Sumo, Helmet

Specifications

Movement
Quartz
Case Material
Stainless Steel
Case Width
37mm
Case Thickness
9.0mm
Lug Width
20mm
Crystal
Sapphire
Bezel
Bidirectional
Water Resistance
40m
Dial Color
Silver
Jewels
32j
Frequency
28,800 bph
Power Reserve
61 hours
Year
1989

Related Models

seikata-wm-e3487f1aa470