Seiko Cal. 5642 - 869

This Spring Drive model from 1978 features a 35mm Hardlex-Coated Steel case. Powered by the 5642 caliber with 29j jewels beating at 28,800 bph, it delivers a 59 hours power reserve. [seikata-wm-10031ef76d65]

Also known as: World Timer

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

8.0mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

40m

Dial Color

White

Jewels

29j

Frequency

28,800 bph

Power Reserve

59 hours

Year

1978

Related Models

• Seiko 4590-778
• Seiko 7130-655
• Seiko 7061-926
• Seiko 4568-851
• Seiko 6351-821
• Seiko 6159-131
• Seiko 6345-776
• Seiko 6376-827
• Seiko 6351-510
• Seiko 6641-902
• Seiko 6268-304
• Seiko 3888-265