Seiko Cal. 4521 - 818

Seiko 4521-818

The 4521-818 is a sought-after Kinetic piece from Seiko's golden era. It features a Burgundy dial protected by a Hardlex crystal and offers 100m of water resistance. [seikata-wm-feec954f1387]

Also known as: Bullhead

Specifications

Movement
Kinetic
Case Material
Hardlex-Coated Steel
Case Width
40mm
Case Thickness
11.1mm
Lug Width
19mm
Crystal
Hardlex
Bezel
Bidirectional
Water Resistance
100m
Dial Color
Burgundy
Jewels
30j
Frequency
21,600 bph
Power Reserve
47 hours
Year
1991

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