Seiko Cal. 4487 - 936

The 4487-936 is a sought-after Spring Drive piece from Seiko's golden era. The Rotating bezel and 43mm case give it a distinctive presence on the wrist. [seikata-wm-0bf08ec8cb81]

Also known as: Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

43mm

Case Thickness

11.8mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

120m

Dial Color

Burgundy

Jewels

33j

Frequency

21,600 bph

Power Reserve

58 hours

Year

1974

Related Models

• Seiko 0796-935
• Seiko 3814-640
• Seiko 7175-584
• Seiko 6196-653
• Seiko 5687-424
• Seiko 5281-746
• Seiko 5237-169
• Seiko 4480-274
• Seiko 0780-553
• Seiko 7184-200
• Seiko 6333-953
• Seiko 4425-197