Seiko Cal. 5631 - 276

The 5631-276 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 5631 caliber with 28j jewels beating at 28,800 bph, it delivers a 50 hours power reserve. [seikata-wm-3c4245206034]

Also known as: Crown

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

36mm

Case Thickness

13.0mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

190m

Dial Color

Navy

Jewels

28j

Frequency

28,800 bph

Power Reserve

50 hours

Year

1993

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