Seiko Cal. 3860 - 656

The Seiko 3860-656 represents an important milestone in Seiko's 1974 lineup. It features a Black dial protected by a Sapphire crystal and offers 40m of water resistance. [seikata-wm-4c8b1a2a7d5d]

Also known as: Crown, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

44mm

Case Thickness

15.7mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

Black

Jewels

22j

Frequency

21,600 bph

Power Reserve

39 hours

Year

1974

Related Models

• Seiko 0773-368
• Seiko 6367-831
• Seiko 6190-108
• Seiko 5213-977
• Seiko 3852-276
• Seiko 7065-964
• Seiko 4573-707
• Seiko 6245-329
• Seiko 4510-285
• Seiko 0717-692
• Seiko 4533-429
• Seiko 6363-157