Seiko Cal. 6644 - 729

Seiko 6644-729

The 6644-729 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 6644 caliber with 21j jewels beating at 21,600 bph, it delivers a 68 hours power reserve. [seikata-wm-fc72e71c4669]

Also known as: Tuna, Navigator

Specifications

Movement
Kinetic
Case Material
Gold-Plated
Case Width
36mm
Case Thickness
14.1mm
Lug Width
18mm
Crystal
Sapphire
Bezel
Inner Rotating
Water Resistance
190m
Dial Color
Green
Jewels
21j
Frequency
21,600 bph
Power Reserve
68 hours
Year
1974

Related Models

seikata-wm-fc72e71c4669