Seiko Cal. 5630 - 278

This Quartz model from 1985 features a 39mm Hardlex-Coated Steel case. Powered by the 5630 caliber with 20j jewels beating at 28,800 bph, it delivers a 66 hours power reserve. [seikata-wm-3f8246ae8cc6]

Also known as: Sportsmatic

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

11.9mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

80m

Dial Color

Burgundy

Jewels

20j

Frequency

28,800 bph

Power Reserve

66 hours

Year

1985

Related Models

• Seiko 4578-366
• Seiko 6268-256
• Seiko 6371-887
• Seiko 7139-640
• Seiko 0718-540
• Seiko 0768-185
• Seiko 6240-234
• Seiko 4587-791
• Seiko 5294-949
• Seiko 6120-125
• Seiko 5634-415
• Seiko 0742-886