Seiko Cal. 3856 - 680

The 3856-680 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 3856 caliber with 34j jewels beating at 36,000 bph, it delivers a 54 hours power reserve. [seikata-wm-a5d9392067a5]

Also known as: Monster, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

37mm

Case Thickness

8.1mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

Cream

Jewels

34j

Frequency

36,000 bph

Power Reserve

54 hours

Year

1974

Related Models

• Seiko 7127-316
• Seiko 3823-637
• Seiko 5212-616
• Seiko 6663-536
• Seiko 4498-669
• Seiko 5285-173
• Seiko 6339-904
• Seiko 6632-241
• Seiko 7098-650
• Seiko 4516-218
• Seiko 6648-249
• Seiko 6191-834