Seiko Cal. 4438 - 669

This Hand-Winding model from 1967 features a 39mm Hardlex-Coated Steel case. It features a Silver dial protected by a Hardlex crystal and offers 30m of water resistance. [seikata-wm-c40b560cad65]

Also known as: Monster, Sumo

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

9.6mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

30m

Dial Color

Silver

Jewels

20j

Frequency

28,800 bph

Power Reserve

59 hours

Year

1967

Related Models

• Seiko 4446-800
• Seiko 4419-593
• Seiko 6365-789
• Seiko 5629-824
• Seiko 7183-181
• Seiko 6218-534
• Seiko 6641-254
• Seiko 7183-269
• Seiko 7061-673
• Seiko 7117-626
• Seiko 0760-702
• Seiko 0777-650