Seiko Cal. 6616 - 820

This Spring Drive model from 1983 features a 46mm PVD Black case. Powered by the 6616 caliber with 33j jewels beating at 36,000 bph, it delivers a 51 hours power reserve. [seikata-wm-d4f2aa855236]

Also known as: Monster

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

46mm

Case Thickness

10.1mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

120m

Dial Color

Navy

Jewels

33j

Frequency

36,000 bph

Power Reserve

51 hours

Year

1983

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