Seiko Cal. 4577 - 440

This Spring Drive model from 1971 features a 44mm Gold-Plated case. The Coin-Edge bezel and 44mm case give it a distinctive presence on the wrist. [seikata-wm-869142ca036e]

Also known as: Sumo, Arnie

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

44mm

Case Thickness

8.6mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

60m

Dial Color

Black

Jewels

22j

Frequency

36,000 bph

Power Reserve

44 hours

Year

1971

Related Models

• Seiko 5256-379
• Seiko 4530-108
• Seiko 3899-267
• Seiko 7188-780
• Seiko 6238-961
• Seiko 6270-766
• Seiko 5635-655
• Seiko 5267-665
• Seiko 3824-735
• Seiko 4548-910
• Seiko 7067-423
• Seiko 7186-845