Seiko Cal. 5647 - 166

The Seiko 5647-166 represents an important milestone in Seiko's 1978 lineup. Powered by the 5647 caliber with 25j jewels beating at 21,600 bph, it delivers a 54 hours power reserve. [seikata-wm-6e4469b01bd1]

Also known as: Arnie

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

38mm

Case Thickness

13.2mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

200m

Dial Color

Burgundy

Jewels

25j

Frequency

21,600 bph

Power Reserve

54 hours

Year

1978

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