Seiko Cal. 6688 - 446

The Seiko 6688-446 represents an important milestone in Seiko's 1965 lineup. Powered by the 6688 caliber with 25j jewels beating at 28,800 bph, it delivers a 52 hours power reserve. [seikata-wm-22851dc493be]

Also known as: Monster

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

37mm

Case Thickness

12.1mm

Lug Width

18mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

200m

Dial Color

Green

Jewels

25j

Frequency

28,800 bph

Power Reserve

52 hours

Year

1965

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