Seiko Cal. 3861 - 654

This Automatic model from 1974 features a 37mm Gold-Plated case. Powered by the 3861 caliber with 31j jewels beating at 28,800 bph, it delivers a 42 hours power reserve. [seikata-wm-2e87111ac103]

Also known as: Sea Horse

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

37mm

Case Thickness

10.9mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

90m

Dial Color

Black

Jewels

31j

Frequency

28,800 bph

Power Reserve

42 hours

Year

1974

Related Models

• Seiko 6350-170
• Seiko 7028-580
• Seiko 6177-118
• Seiko 5286-886
• Seiko 3863-114
• Seiko 6663-928
• Seiko 7086-668
• Seiko 3864-791
• Seiko 6649-349
• Seiko 5663-321
• Seiko 3874-214
• Seiko 4410-301