Seiko Cal. 6636 - 591

This Quartz model from 1996 features a 46mm Titanium case. Powered by the 6636 caliber with 31j jewels beating at 36,000 bph, it delivers a 63 hours power reserve. [seikata-wm-c482efb2fb88]

Also known as: Tuna

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

46mm

Case Thickness

12.4mm

Lug Width

18mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

Green

Jewels

31j

Frequency

36,000 bph

Power Reserve

63 hours

Year

1996

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