Seiko Cal. 3831 - 566

This Hand-Winding model from 1987 features a 40mm PVD Black case. Powered by the 3831 caliber with 21j jewels beating at 36,000 bph, it delivers a 72 hours power reserve. [seikata-wm-0e283c208477]

Also known as: Tuna, Rally

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

40mm

Case Thickness

8.4mm

Lug Width

21mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

80m

Dial Color

Champagne

Jewels

21j

Frequency

36,000 bph

Power Reserve

72 hours

Year

1987

Related Models

• Seiko 6145-288
• Seiko 4516-932
• Seiko 6295-171
• Seiko 7064-671
• Seiko 7118-424
• Seiko 7063-309
• Seiko 7097-570
• Seiko 6263-506
• Seiko 6276-126
• Seiko 6676-667
• Seiko 3823-489
• Seiko 6222-327