Seiko Cal. 3891 - 548

The 3891-548 is a sought-after Solar piece from Seiko's golden era. Powered by the 3891 caliber with 36j jewels beating at 21,600 bph, it delivers a 39 hours power reserve. [seikata-wm-b279d3c5edf7]

Also known as: Sumo, World Timer

Specifications

Movement

Solar

Case Material

Titanium

Case Width

38mm

Case Thickness

15.5mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

80m

Dial Color

Burgundy

Jewels

36j

Frequency

21,600 bph

Power Reserve

39 hours

Year

1976

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