Seiko Cal. 6181 - 644

The 6181-644 is a sought-after Solar piece from Seiko's golden era. Powered by the 6181 caliber with 20j jewels beating at 36,000 bph, it delivers a 62 hours power reserve. [seikata-wm-e0eb1604f42a]

Also known as: Emperor

Specifications

Movement

Solar

Case Material

Titanium

Case Width

39mm

Case Thickness

14.4mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

60m

Dial Color

Cream

Jewels

20j

Frequency

36,000 bph

Power Reserve

62 hours

Year

1973

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