Seiko Cal. 6687 - 181

The 6687-181 is a sought-after Solar piece from Seiko's golden era. Powered by the 6687 caliber with 27j jewels beating at 28,800 bph, it delivers a 42 hours power reserve. [seikata-wm-b58f16e6ab86]

Also known as: Monster, Helmet

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

34mm

Case Thickness

15.2mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

130m

Dial Color

Cream

Jewels

27j

Frequency

28,800 bph

Power Reserve

42 hours

Year

1998

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