Seiko Cal. 6647 - 450

This Hand-Winding model from 1981 features a 46mm Two-Tone case. Powered by the 6647 caliber with 23j jewels beating at 36,000 bph, it delivers a 69 hours power reserve. [seikata-wm-7c2b42bb5f21]

Also known as: Sportsmatic, Crown

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

46mm

Case Thickness

12.2mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

190m

Dial Color

Silver

Jewels

23j

Frequency

36,000 bph

Power Reserve

69 hours

Year

1981

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