Seiko Cal. 6644 - 557

The 6644-557 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 6644 caliber with 20j jewels beating at 36,000 bph, it delivers a 45 hours power reserve. [seikata-wm-aa59a5727848]

Also known as: Helmet

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

35mm

Case Thickness

13.0mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

120m

Dial Color

Silver

Jewels

20j

Frequency

36,000 bph

Power Reserve

45 hours

Year

1993

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