Seiko Cal. 6381 - 545

The 6381-545 is a sought-after Solar piece from Seiko's golden era. Powered by the 6381 caliber with 20j jewels beating at 28,800 bph, it delivers a 55 hours power reserve. [seikata-wm-49bfd4ecd755]

Also known as: Sumo

Specifications

Movement

Solar

Case Material

Titanium

Case Width

38mm

Case Thickness

11.9mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

90m

Dial Color

Champagne

Jewels

20j

Frequency

28,800 bph

Power Reserve

55 hours

Year

1972

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