Seiko Cal. 5663 - 653

This Automatic model from 1981 features a 45mm Two-Tone case. Powered by the 5663 caliber with 20j jewels beating at 21,600 bph, it delivers a 57 hours power reserve. [seikata-wm-bd933b177482]

Also known as: Tuna

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

45mm

Case Thickness

15.1mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

White

Jewels

20j

Frequency

21,600 bph

Power Reserve

57 hours

Year

1981

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