Seiko Cal. 5660 - 273

The Seiko 5660-273 represents an important milestone in Seiko's 1976 lineup. It features a Silver dial protected by a Mineral crystal and offers 190m of water resistance. [seikata-wm-6724fd244cd9]

Also known as: Baby Tuna, Arnie

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

38mm

Case Thickness

10.7mm

Lug Width

21mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

190m

Dial Color

Silver

Jewels

25j

Frequency

21,600 bph

Power Reserve

67 hours

Year

1976

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