Seiko Cal. 3857 - 240

Seiko 3857-240

The Seiko 3857-240 represents an important milestone in Seiko's 1979 lineup. Powered by the 3857 caliber with 24j jewels beating at 21,600 bph, it delivers a 62 hours power reserve. [seikata-wm-9f5c21a1a0fb]

Also known as: Turtle, Arnie

Specifications

Movement
Kinetic
Case Material
PVD Black
Case Width
45mm
Case Thickness
14.4mm
Lug Width
20mm
Crystal
Hardlex
Bezel
Rotating
Water Resistance
140m
Dial Color
Navy
Jewels
24j
Frequency
21,600 bph
Power Reserve
62 hours
Year
1979

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