Seiko Cal. 7031 - 439

This Quartz model from 1981 features a 37mm Gold-Plated case. It features a Navy dial protected by a Mineral crystal and offers 60m of water resistance. [seikata-wm-d7474c83ca09]

Also known as: Sumo, Tuna

Specifications

Movement

Quartz

Case Material

Gold-Plated

Case Width

37mm

Case Thickness

9.3mm

Lug Width

19mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

60m

Dial Color

Navy

Jewels

26j

Frequency

36,000 bph

Power Reserve

65 hours

Year

1981

Related Models

• Seiko 6223-933
• Seiko 5263-151
• Seiko 3826-629
• Seiko 5230-924
• Seiko 4429-257
• Seiko 0755-124
• Seiko 3856-977
• Seiko 7115-213
• Seiko 7121-460
• Seiko 5654-673
• Seiko 6384-533
• Seiko 5218-921