Seiko Cal. 4431 - 180

This Spring Drive model from 1991 features a 35mm Gold-Plated case. It features a Cream dial protected by a Mineral crystal and offers 40m of water resistance. [seikata-wm-fb1ba259d390]

Also known as: Bellmatic

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

35mm

Case Thickness

15.6mm

Lug Width

19mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

40m

Dial Color

Cream

Jewels

27j

Frequency

36,000 bph

Power Reserve

66 hours

Year

1991

Related Models

• Seiko 6632-440
• Seiko 6175-834
• Seiko 5297-954
• Seiko 3831-526
• Seiko 6394-157
• Seiko 0789-158
• Seiko 5272-155
• Seiko 4573-627
• Seiko 4564-490
• Seiko 5281-568
• Seiko 0777-886
• Seiko 6632-767