Seiko Cal. 4438 - 721

This Automatic model from 1991 features a 40mm PVD Black case. It features a Black dial protected by a Hardlex crystal and offers 150m of water resistance. [seikata-wm-d534dc7326ac]

Also known as: Turtle, Navigator

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

40mm

Case Thickness

14.9mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

150m

Dial Color

Black

Jewels

27j

Frequency

36,000 bph

Power Reserve

42 hours

Year

1991

Related Models

• Seiko 3865-967
• Seiko 5265-308
• Seiko 6117-352
• Seiko 7140-962
• Seiko 6654-632
• Seiko 6682-872
• Seiko 6336-263
• Seiko 6162-305
• Seiko 4438-745
• Seiko 7126-401
• Seiko 4487-695
• Seiko 6328-789