Seiko Cal. 6645 - 785

The Seiko 6645-785 represents an important milestone in Seiko's 1978 lineup. Powered by the 6645 caliber with 35j jewels beating at 36,000 bph, it delivers a 52 hours power reserve. [seikata-wm-16998abcf5fc]

Also known as: Monster

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

43mm

Case Thickness

14.3mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

140m

Dial Color

Black

Jewels

35j

Frequency

36,000 bph

Power Reserve

52 hours

Year

1978

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