Seiko Cal. 6644 - 557

Seiko 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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seikata-wm-aa59a5727848