Seiko Cal. 6645 - 856

The Seiko 6645-856 represents an important milestone in Seiko's 1997 lineup. Powered by the 6645 caliber with 28j jewels beating at 28,800 bph, it delivers a 39 hours power reserve. [seikata-wm-86d1888de47c]

Also known as: Monster

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

46mm

Case Thickness

12.8mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

180m

Dial Color

Navy

Jewels

28j

Frequency

28,800 bph

Power Reserve

39 hours

Year

1997

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