Seiko Cal. 5631 - 385

The 5631-385 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 5631 caliber with 25j jewels beating at 21,600 bph, it delivers a 49 hours power reserve. [seikata-wm-727dd4e8a067]

Also known as: Turtle

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

37mm

Case Thickness

10.0mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

80m

Dial Color

Green

Jewels

25j

Frequency

21,600 bph

Power Reserve

49 hours

Year

1994

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