Seiko Cal. 6371 - 439

The Seiko 6371-439 represents an important milestone in Seiko's 1981 lineup. Powered by the 6371 caliber with 18j jewels beating at 36,000 bph, it delivers a 57 hours power reserve. [seikata-wm-bb3126900e06]

Also known as: Turtle, Shogun

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

40mm

Case Thickness

11.2mm

Lug Width

21mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

30m

Dial Color

Green

Jewels

18j

Frequency

36,000 bph

Power Reserve

57 hours

Year

1981

Related Models

• Seiko 6250-439
• Seiko 6159-112
• Seiko 6622-471
• Seiko 7131-830
• Seiko 6692-823
• Seiko 0751-745
• Seiko 5298-546
• Seiko 7182-543
• Seiko 5686-516
• Seiko 5649-197
• Seiko 6394-129
• Seiko 6226-374