Seiko Cal. 6138 - 221

The 6138-221 is a sought-after Solar piece from Seiko's golden era. Powered by the 6138 caliber with 33j jewels beating at 36,000 bph, it delivers a 69 hours power reserve. [seikata-wm-56726aa911ab]

Also known as: Sumo, Crown

Specifications

Movement

Solar

Case Material

Titanium

Case Width

41mm

Case Thickness

15.2mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

60m

Dial Color

White

Jewels

33j

Frequency

36,000 bph

Power Reserve

69 hours

Year

1981

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