Seiko Cal. 3811 - 855

This Spring Drive model from 1966 features a 34mm Two-Tone case. Powered by the 3811 caliber with 28j jewels beating at 28,800 bph, it delivers a 53 hours power reserve. [seikata-wm-90ca83ba7a45]

Also known as: Sumo, Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

34mm

Case Thickness

11.3mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

60m

Dial Color

Cream

Jewels

28j

Frequency

28,800 bph

Power Reserve

53 hours

Year

1966

Related Models

• Seiko 4485-768
• Seiko 4587-971
• Seiko 5249-540
• Seiko 6239-399
• Seiko 3838-930
• Seiko 4473-680
• Seiko 0745-848
• Seiko 6261-194
• Seiko 3816-643
• Seiko 6377-593
• Seiko 6650-411
• Seiko 6329-183