Seiko Cal. 4438 - 940

Seiko 4438-940

The Seiko 4438-940 represents an important milestone in Seiko's 1999 lineup. With its 22mm lug width and 9.9mm profile, it sits comfortably on most wrists. [seikata-wm-9387ddccbbbd]

Also known as: Sportsmatic

Specifications

Movement
Hand-Winding
Case Material
Stainless Steel
Case Width
36mm
Case Thickness
9.9mm
Lug Width
22mm
Crystal
Mineral
Bezel
Coin-Edge
Water Resistance
160m
Dial Color
Green
Jewels
29j
Frequency
36,000 bph
Power Reserve
55 hours
Year
1999

Related Models

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