Seiko Cal. 3831 - 636

The Seiko 3831-636 represents an important milestone in Seiko's 1982 lineup. It features a Green dial protected by a Mineral crystal and offers 200m of water resistance. [seikata-wm-79854096f814]

Also known as: Sumo, Tuna

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

10.0mm

Lug Width

22mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

200m

Dial Color

Green

Jewels

24j

Frequency

28,800 bph

Power Reserve

63 hours

Year

1982

Related Models

• Seiko 6311-603
• Seiko 6367-126
• Seiko 5297-528
• Seiko 5621-786
• Seiko 4541-786
• Seiko 4462-640
• Seiko 5666-334
• Seiko 5698-541
• Seiko 6313-741
• Seiko 6665-838
• Seiko 3835-649
• Seiko 0791-816