Seiko Cal. 0728 - 643

Seiko 0728-643

The 0728-643 is a sought-after Quartz piece from Seiko's golden era. It features a Black dial protected by a Sapphire crystal and offers 80m of water resistance. [seikata-wm-69e568f46b33]

Also known as: Silverwave, Sportsmatic

Specifications

Movement
Quartz
Case Material
PVD Black
Case Width
35mm
Case Thickness
12.5mm
Lug Width
18mm
Crystal
Sapphire
Bezel
Fixed
Water Resistance
80m
Dial Color
Black
Jewels
17j
Frequency
28,800 bph
Power Reserve
45 hours
Year
1973

Related Models

seikata-wm-69e568f46b33