Seiko Cal. 3821 - 955

The Seiko 3821-955 represents an important milestone in Seiko's 1976 lineup. Powered by the 3821 caliber with 27j jewels beating at 28,800 bph, it delivers a 69 hours power reserve. [seikata-wm-c4fb1c0a9430]

Also known as: Sumo, Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

44mm

Case Thickness

11.1mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Green

Jewels

27j

Frequency

28,800 bph

Power Reserve

69 hours

Year

1976

Related Models

• Seiko 7150-206
• Seiko 6355-511
• Seiko 4589-723
• Seiko 7090-478
• Seiko 5294-441
• Seiko 5696-540
• Seiko 4488-548
• Seiko 6642-372
• Seiko 7115-880
• Seiko 6121-204
• Seiko 0785-116
• Seiko 6223-260