Seiko Cal. 6687 - 181

Seiko 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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