Seiko Cal. 6630 - 438

This Hand-Winding model from 1972 features a 44mm PVD Black case. It features a Champagne dial protected by a Hardlex crystal and offers 160m of water resistance. [seikata-wm-cd151540eb0f]

Also known as: Sumo

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

44mm

Case Thickness

13.7mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

160m

Dial Color

Champagne

Jewels

23j

Frequency

21,600 bph

Power Reserve

54 hours

Year

1972

Related Models

• Seiko 6177-235
• Seiko 0750-172
• Seiko 5238-531
• Seiko 6646-683
• Seiko 5655-550
• Seiko 4451-522
• Seiko 6268-587
• Seiko 7119-460
• Seiko 6158-518
• Seiko 3849-685
• Seiko 4557-560
• Seiko 4466-178