Seiko Cal. 6644 - 248

Seiko 6644-248

The Seiko 6644-248 represents an important milestone in Seiko's 1983 lineup. Powered by the 6644 caliber with 26j jewels beating at 21,600 bph, it delivers a 57 hours power reserve. [seikata-wm-fa2302f7cfe6]

Also known as: Sumo, Golden Tuna

Specifications

Movement
Hand-Winding
Case Material
Stainless Steel
Case Width
34mm
Case Thickness
11.4mm
Lug Width
18mm
Crystal
Sapphire
Bezel
Bidirectional
Water Resistance
80m
Dial Color
Green
Jewels
26j
Frequency
21,600 bph
Power Reserve
57 hours
Year
1983

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