Seiko Cal. 4591 - 684

The Seiko 4591-684 represents an important milestone in Seiko's 1996 lineup. Powered by the 4591 caliber with 30j jewels beating at 21,600 bph, it delivers a 54 hours power reserve. [seikata-wm-b3fb095a6c00]

Also known as: Bullhead, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

11.5mm

Lug Width

18mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

120m

Dial Color

Burgundy

Jewels

30j

Frequency

21,600 bph

Power Reserve

54 hours

Year

1996

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