Seiko Cal. 4528 - 646

Seiko 4528-646

The 4528-646 is a sought-after Kinetic piece from Seiko's golden era. It features a Green dial protected by a Mineral crystal and offers 140m of water resistance. [seikata-wm-f5b0415b0ace]

Also known as: Sumo, Baby Tuna

Specifications

Movement
Kinetic
Case Material
Two-Tone
Case Width
34mm
Case Thickness
13.6mm
Lug Width
20mm
Crystal
Mineral
Bezel
Coin-Edge
Water Resistance
140m
Dial Color
Green
Jewels
24j
Frequency
28,800 bph
Power Reserve
70 hours
Year
1980

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