Seiko Cal. 6647 - 813

This Spring Drive model from 1978 features a 42mm PVD Black case. Powered by the 6647 caliber with 32j jewels beating at 28,800 bph, it delivers a 48 hours power reserve. [seikata-wm-20b1c4254983]

Also known as: Bellmatic, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

42mm

Case Thickness

15.2mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

80m

Dial Color

Champagne

Jewels

32j

Frequency

28,800 bph

Power Reserve

48 hours

Year

1978

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