Seiko Cal. 4438 - 150

The Seiko 4438-150 represents an important milestone in Seiko's 1981 lineup. It features a Green dial protected by a Mineral crystal and offers 150m of water resistance. [seikata-wm-31c0196e6bb6]

Also known as: Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

40mm

Case Thickness

15.3mm

Lug Width

22mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

150m

Dial Color

Green

Jewels

29j

Frequency

36,000 bph

Power Reserve

53 hours

Year

1981

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