Seiko Cal. 7138 - 331

This Hand-Winding model from 1987 features a 44mm Gold-Plated case. Powered by the 7138 caliber with 27j jewels beating at 28,800 bph, it delivers a 70 hours power reserve. [seikata-wm-79de2db57a16]

Also known as: Shogun

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

44mm

Case Thickness

8.9mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

60m

Dial Color

Silver

Jewels

27j

Frequency

28,800 bph

Power Reserve

70 hours

Year

1987

Related Models

• Seiko 6397-456
• Seiko 4585-874
• Seiko 7139-363
• Seiko 0736-808
• Seiko 5239-106
• Seiko 0755-526
• Seiko 7075-432
• Seiko 7169-397
• Seiko 6129-604
• Seiko 6665-382
• Seiko 6144-983
• Seiko 6616-307