Seiko Cal. 5678 - 436

The Seiko 5678-436 represents an important milestone in Seiko's 1977 lineup. Powered by the 5678 caliber with 28j jewels beating at 28,800 bph, it delivers a 52 hours power reserve. [seikata-wm-649cf5cce482]

Also known as: Turtle, Bellmatic

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

39mm

Case Thickness

9.6mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Cream

Jewels

28j

Frequency

28,800 bph

Power Reserve

52 hours

Year

1977

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