Seiko Cal. 3889 - 637

The 3889-637 is a sought-after Solar piece from Seiko's golden era. Powered by the 3889 caliber with 28j jewels beating at 28,800 bph, it delivers a 52 hours power reserve. [seikata-wm-cc29a4655985]

Also known as: Helmet, Emperor

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

36mm

Case Thickness

10.1mm

Lug Width

18mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

200m

Dial Color

Green

Jewels

28j

Frequency

28,800 bph

Power Reserve

52 hours

Year

1999

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