Seiko Cal. 4421 - 593

The Seiko 4421-593 represents an important milestone in Seiko's 1971 lineup. It features a Burgundy dial protected by a Mineral crystal and offers 140m of water resistance. [seikata-wm-9004182f4a4b]

Also known as: Sea Horse, Baby Tuna

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

10.3mm

Lug Width

21mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

140m

Dial Color

Burgundy

Jewels

30j

Frequency

36,000 bph

Power Reserve

44 hours

Year

1971

Related Models

• Seiko 3814-138
• Seiko 6136-186
• Seiko 6676-460
• Seiko 5618-269
• Seiko 4564-397
• Seiko 0742-483
• Seiko 7125-919
• Seiko 6645-170
• Seiko 6344-880
• Seiko 4476-156
• Seiko 6614-666
• Seiko 4439-469