Copyright © 2000-2018 - Watches n’ Such - All Rights Reserved
WNS-6070-4005 - National Semiconductor - LED - Red Lens - Digital - Front View Illuminated_
Case: Metal (Silver toned) Tonneau Case measuring 36 mm across by 40 mm lug to lug. Back is marked National Semiconductor, 228572A, Stainless Steel Back and Base Metal Bezel.
Dial: A red plastic crystal with the National Semiconductor symbol in white lettering.
Movement: Marked National Semiconductor, U.S. Components assembled in Singapore, No Jewels and Unadjusted. The watch is run by 2 batteries.
Strap: Silver U.S.A. Stretch bracelet.
Comments: Early 1970s LED wristwatch from National Semiconductor - in good all around condition and keeping accurate time.
Item ID: WNS-6070-4005
Brief History of the LED wristwatch:
LED ("LED" stands for "light emitting diode" which is a technical term describing the glowing slabs of silicon that show the time in glowing digital red numbers.) LED watches do not have a traditional watch dial and hands. LED watches were the first entirely electronic digital watches and use a quartz crystal for extremely accurate timekeeping.
LED watches have had a bad reputation as a "power hungry" devise, but they are only power hungry when the time is displayed (when pushing the buttons) which is only a small portion of the time during the day.
LED watches were the first watches with no moving parts, digital watches could achieve an accuracy of 30 seconds per year. This is 50 times better than the finest Rolex or about 25 times better than a Buolva Accutron.
LED watches from the 1970s remain as accurate as any quartz watch made today because of their quartz crystal and a micro-digital computer that is programmed to show current time. In watches (or any timekeeping device) the faster the oscillator the more accurate the timekeeping will prove to be. A balance wheel beats between 5 and 8 times per second. A tuning fork vibrates almost 100 times faster at 360 to 720 times per second. A quartz crystal beats another 100 times faster at 32,768 times per second so this allows this technology to keep extremely accurate time.
The LED watch, which was revolutionary in the early 1970s, did not last long as a competitor in the watch market (approximately 5-6 years) as it was rendered obsolete by LCD (liquid crystal display) technology which was cheaper, had continuous display (vs the LED which required the pushing of a button.
National Semiconductor - LED (Light Emitting Diode) Wristwatch - (circa early 1970s)
WNS-6070-4005 - National Semiconductor - LED - Red Lens - Digital - Dial Close Up View_
WNS-6070-4005 - National Semiconductor - LED - Red Lens - Digital - Front View
WNS-6070-4005 - National Semiconductor - LED - Red Lens - Digital - Full Left Front View_