Seiko Cal. 5680 - 644

Seiko 5680-644

The 5680-644 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 5680 caliber with 25j jewels beating at 21,600 bph, it delivers a 68 hours power reserve. [seikata-wm-10140dbd6cd0]

Also known as: Sumo, Flighty

Specifications

Movement
Kinetic
Case Material
Two-Tone
Case Width
36mm
Case Thickness
14.1mm
Lug Width
22mm
Crystal
Hardlex
Bezel
Fixed
Water Resistance
40m
Dial Color
Navy
Jewels
25j
Frequency
21,600 bph
Power Reserve
68 hours
Year
1995

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seikata-wm-10140dbd6cd0