Seiko Cal. 4487 - 624

This Spring Drive model from 1977 features a 46mm Titanium case. Powered by the 4487 caliber with 29j jewels beating at 36,000 bph, it delivers a 46 hours power reserve. [seikata-wm-1c013e6cb770]

Also known as: Silverwave, Emperor

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

46mm

Case Thickness

11.8mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Cream

Jewels

29j

Frequency

36,000 bph

Power Reserve

46 hours

Year

1977

Related Models

• Seiko 6281-949
• Seiko 5237-708
• Seiko 3857-981
• Seiko 6161-563
• Seiko 4420-339
• Seiko 6320-948
• Seiko 0778-657
• Seiko 6622-897
• Seiko 4599-949
• Seiko 5618-721
• Seiko 5644-444
• Seiko 5672-846