Seiko Cal. 6644 - 136

Seiko 6644-136

This Hand-Winding model from 1972 features a 34mm Titanium case. Powered by the 6644 caliber with 17j jewels beating at 28,800 bph, it delivers a 46 hours power reserve. [seikata-wm-a4f2ac20c11b]

Specifications

Movement
Hand-Winding
Case Material
Titanium
Case Width
34mm
Case Thickness
11.7mm
Lug Width
20mm
Crystal
Hardlex
Bezel
Coin-Edge
Water Resistance
170m
Dial Color
Green
Jewels
17j
Frequency
28,800 bph
Power Reserve
46 hours
Year
1972

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