Seiko Cal. 4487 - 331

Released in 1981, the Cal. 4487 with design code 331 was part of Seiko's domestic market collection. With its 19mm lug width and 13.2mm profile, it sits comfortably on most wrists. [seikata-wm-c074be1223db]

Also known as: Bellmatic

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

35mm

Case Thickness

13.2mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

170m

Dial Color

Champagne

Jewels

29j

Frequency

21,600 bph

Power Reserve

56 hours

Year

1981

Related Models

• Seiko 5297-827
• Seiko 0795-520
• Seiko 7143-872
• Seiko 6318-370
• Seiko 5676-511
• Seiko 5234-741
• Seiko 5611-839
• Seiko 4468-290
• Seiko 7091-361
• Seiko 5222-899
• Seiko 6156-800
• Seiko 4532-314