Seiko Cal. 4428 - 987

The 4428-987 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 4428 caliber with 35j jewels beating at 36,000 bph, it delivers a 50 hours power reserve. [seikata-wm-ca342acdc215]

Also known as: Monster, Sea Horse

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

42mm

Case Thickness

13.5mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

180m

Dial Color

Champagne

Jewels

35j

Frequency

36,000 bph

Power Reserve

50 hours

Year

1974

Related Models

• Seiko 6388-130
• Seiko 6668-764
• Seiko 6279-401
• Seiko 6336-176
• Seiko 6298-562
• Seiko 0730-914
• Seiko 7038-650
• Seiko 7024-967
• Seiko 7024-666
• Seiko 0778-240
• Seiko 4584-256
• Seiko 6122-789