Seiko Cal. 5664 - 121

The Seiko 5664-121 represents an important milestone in Seiko's 1995 lineup. Powered by the 5664 caliber with 27j jewels beating at 21,600 bph, it delivers a 55 hours power reserve. [seikata-wm-fcd91cd89c2a]

Also known as: Bellmatic

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

9.5mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

140m

Dial Color

Navy

Jewels

27j

Frequency

21,600 bph

Power Reserve

55 hours

Year

1995

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