Seiko Astron SSH023 Limited Edition 50th Anniversary 1969 5x Series Dual Time Black Stainless Steel Casio Edifice Solar Chronograph EQS900CL-1AV Water-Resistance: 200m / 660ft diver's

Water-Resistance: 200m / 660ft diver's

Water Resistance : 100m / 330ft

these four models come with urethane bands

ANTI-REFLECTIVE SAPPHIRE CRYSTAL

Movement: Swiss ETA quartz (battery operated)

Seiko Astron SSH023 Limited Edition 50th Anniversary 1969 5x Series Dual Time Black Stainless Steel Casio Edifice Solar Chronograph EQS900CL-1AV Water-Resistance: 200m / 660ft diver'sToday, 50 years after the Seiko Quartz Astron ushered in the quartz revolution, the enduring popularity, ubiquity and versatility of this remarkable technology have all been proven beyond any expectation. The Quartz Astron changed the way the world told time, astonishing people with its accuracy of +5 to 5 seconds per month. It also shaped the whole future of the electronics industry as several of its inventions, including the tuning fork shaped