Seiko Cal. 6653 - 727

This Spring Drive model from 1987 features a 36mm Titanium case. Powered by the 6653 caliber with 29j jewels beating at 28,800 bph, it delivers a 61 hours power reserve. [seikata-wm-fb107e9ebb80]

Also known as: Tuna

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

36mm

Case Thickness

11.7mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

90m

Dial Color

Burgundy

Jewels

29j

Frequency

28,800 bph

Power Reserve

61 hours

Year

1987

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