Seiko Cal. 3837 - 660

The 3837-660 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 3837 caliber with 21j jewels beating at 21,600 bph, it delivers a 37 hours power reserve. [seikata-wm-6031d5edeb49]

Also known as: Turtle, Helmet

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

42mm

Case Thickness

13.5mm

Lug Width

20mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

190m

Dial Color

Green

Jewels

21j

Frequency

21,600 bph

Power Reserve

37 hours

Year

1995

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