Seiko Cal. 4581 - 937

The Seiko 4581-937 represents an important milestone in Seiko's 1986 lineup. The Bidirectional bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-d169693b02ab]

Also known as: Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

40mm

Case Thickness

13.3mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

160m

Dial Color

Black

Jewels

25j

Frequency

21,600 bph

Power Reserve

48 hours

Year

1986

Related Models

• Seiko 0754-403
• Seiko 4522-476
• Seiko 7154-196
• Seiko 7168-895
• Seiko 6289-638
• Seiko 6368-575
• Seiko 4585-136
• Seiko 4442-420
• Seiko 6610-756
• Seiko 6610-633
• Seiko 7132-573
• Seiko 6313-670