Seiko Cal. 3817 - 309

Seiko 3817-309

The Seiko 3817-309 represents an important milestone in Seiko's 1991 lineup. Powered by the 3817 caliber with 26j jewels beating at 28,800 bph, it delivers a 70 hours power reserve. [seikata-wm-cfe6dfe776b3]

Also known as: Turtle, UFO

Specifications

Movement
Hand-Winding
Case Material
Gold-Plated
Case Width
45mm
Case Thickness
12.5mm
Lug Width
21mm
Crystal
Sapphire
Bezel
Inner Rotating
Water Resistance
120m
Dial Color
Navy
Jewels
26j
Frequency
28,800 bph
Power Reserve
70 hours
Year
1991

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