Seiko Cal. 5687 - 439

Seiko 5687-439

The 5687-439 is a sought-after Kinetic piece from Seiko's golden era. With its 22mm lug width and 9.2mm profile, it sits comfortably on most wrists. [seikata-wm-e6ae6dbb9b74]

Also known as: Monster, Helmet

Specifications

Movement
Kinetic
Case Material
Hardlex-Coated Steel
Case Width
40mm
Case Thickness
9.2mm
Lug Width
22mm
Crystal
Sapphire
Bezel
Coin-Edge
Water Resistance
30m
Dial Color
Green
Jewels
18j
Frequency
21,600 bph
Power Reserve
63 hours
Year
1968

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