Seiko Cal. 6647 - 653

The Seiko 6647-653 represents an important milestone in Seiko's 1977 lineup. It features a White dial protected by a Mineral crystal and offers 160m of water resistance. [seikata-wm-ec00ce7b3352]

Also known as: Rally, Baby Tuna

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

35mm

Case Thickness

12.2mm

Lug Width

18mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

160m

Dial Color

White

Jewels

23j

Frequency

36,000 bph

Power Reserve

69 hours

Year

1977

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