Seiko Cal. 5678 - 712

This Hand-Winding model from 1973 features a 37mm PVD Black case. Powered by the 5678 caliber with 26j jewels beating at 21,600 bph, it delivers a 68 hours power reserve. [seikata-wm-dc3d4cc105da]

Also known as: Sumo

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

37mm

Case Thickness

14.8mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

70m

Dial Color

White

Jewels

26j

Frequency

21,600 bph

Power Reserve

68 hours

Year

1973

Related Models

• Seiko 0758-212
• Seiko 6642-315
• Seiko 6633-427
• Seiko 7011-173
• Seiko 3865-727
• Seiko 4434-960
• Seiko 6249-760
• Seiko 7034-141
• Seiko 4571-964
• Seiko 0749-566
• Seiko 7195-566
• Seiko 6340-546