Seiko Cal. 6618 - 628

The Seiko 6618-628 represents an important milestone in Seiko's 1977 lineup. Powered by the 6618 caliber with 24j jewels beating at 36,000 bph, it delivers a 52 hours power reserve. [seikata-wm-9e7100fbb6c4]

Also known as: Navigator, Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

45mm

Case Thickness

11.5mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

40m

Dial Color

Champagne

Jewels

24j

Frequency

36,000 bph

Power Reserve

52 hours

Year

1977

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