Seiko Cal. 6371 - 320

This Hand-Winding model from 1975 features a 42mm PVD Black case. It features a Black dial protected by a Hardlex crystal and offers 170m of water resistance. [seikata-wm-7849037ff462]

Also known as: Tuna

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

42mm

Case Thickness

14.5mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

Black

Jewels

33j

Frequency

21,600 bph

Power Reserve

45 hours

Year

1975

Related Models

• Seiko 4488-797
• Seiko 7183-782
• Seiko 3852-716
• Seiko 6152-424
• Seiko 6131-846
• Seiko 4532-756
• Seiko 0745-332
• Seiko 4547-966
• Seiko 5252-211
• Seiko 4571-757
• Seiko 7025-881
• Seiko 0764-353