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The original digital watch button foretold the battery life struggle of modern smartwatches

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In hindsight, it sounds almost ridiculous. An expensive watch with technology that’s never been put on your wrist before that costs hundreds of dollars more than a traditional timepiece. And get this: this fancy, futuristic gadget cant even continuously show the time.

No, I’m not talking about the original Apple Watch. I’m talking about the Pulsar Time Computer, the first commercially sold digital watch, which was released back in the 1970s by Hamilton. But despite the 50-year difference, the Pulsar foretold the same issues that we still struggle with today on our modern smartwatches — and fixed them the way we do, too: with a button.

The original Pulsar was a revolutionary device, so cool and futuristic that it appeared in Live and Let Die on the wrist of Roger Moore’s James Bond. But it had a big flaw: the LED technology that Hamilton used on the Pulsar was simply too power-hungry to stay illuminated all the time. To deal with the technology’s limitations, Hamilton turned to a very analog solution in the form of a physical button that had to be pressed to light up the LED display and show the time for a few seconds. Later models would iterate on that, adding a wrist-flicking gesture to automatically light up the watch. (For a more complete look at the rise and fall of digital LED watches, check out Hodinkee‘s in-depth history here.)

That single button did all the heavy lifting. Without the rotating crowns or gears of a traditional wristwatch, Hamilton also had to introduce a new method of setting the time. Pressing and holding the single button switches the watch to a time-setting mode. Individual clicks of the button advance the hour; users then press and hold again to adjust the tens of minutes, and finally the individual minute. It’s a system that’s still common today on most digital watches, largely unchanged throughout the decades.

The good news for today’s smartwatches is that the Pulsar’s battery problem wasn’t insurmountable. Liquid-crystal displays — LCDs — arrived, with their iconic seven-segment configuration to show numbers. The switch to LCDs allowed for watches with less power-hungry displays that could offer the best of both worlds. Today’s digital watches offer precise timekeeping that outdoes the finest of handmade Swiss watches and the ability to not just display the time all the time but to do so for years before needing a replacement battery.

Technology is nothing but cyclical, though, which is why decades after Hamilton struggled with a way to cram enough power into a tiny, wrist-born form factor, we’re still struggling to do the same thing with modern smartwatches.

The first-generation Android Wear and Apple Watches — released in 2014 and 2015 — suffered from the exact same limitation the Pulsar did all those years ago: being unable to keep their screens powered on the whole time.

Despite all the leaps and bounds of modern technology, the early generations of smartwatches had to turn to similar solutions as the Pulsar, limiting watchface visibility to the same physical actions, like raising your wrist or pushing a button. Apple took until last year to solve this problem to a satisfactory level, optimizing display settings and battery technology to create a screen that stayed on all the time without sacrificing the broader functionality of the Apple Watch.

Even the hardware itself has come full circle. Where the LED display on the Pulsar was too power-hungry for the 1970s, its descendant OLED technology — with its bright colors, deeper blacks, and ability to selectively power just the visible parts of the display — is perfect for today’s (rechargeable) smartwatches.

Those dueling technologies are still at the heart of the modernized Hamilton PSR, the 2020 remake of the original Pulsar Time Computer that’s pictured in this article. In deference to the (reasonable) demand that a wristwatch be able to always display the time, it has a hybrid LCD and OLED panel. Most of the time, the LCD portion will dimly show the time; it’s unsatisfying but effective. Push the button, though, and the LEDs will blaze to life — just like on the original model from half a century ago.

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Charge Your Phone Wirelessly With 50% off a Multifunctional LED Lamp

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Best Tech DealsBest Tech DealsThe best tech deals from around the web, updated daily.

White Wireless Charge Lamp | $18 | Amazon | Clip coupon + code ABC88699
Black Wireless Charger Lamp | $20 | Amazon | Promo code ABC88699

When you’re ready to turn in for the night, you don’t want to forget to charge your phone— especially if your mobile device doubles as your alarm clock.

With this wireless charger lamp, you can make this crucial step of your nightly routine even easier by just setting your phone on the wireless charging pad and… well, that’s all there is to it!

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Other functions include multiple lighting modes as well as a sleep timer option for auto shut-off of the light after 30 or 60 minutes.

This lamp can be yours in white for $18 if you clip the coupon on Amazon (it’s below the original $40 price) and add promo code ABC88699 at checkout.

You can snag the black version for $20 using the same code—no coupon though, sorry.

Don’t sleep on this deal! Who knows how long stock or the coupon code will last?

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Keep That Hotdish Hot With 65% Off a Luncia Casserole Carrier, Only $11 With Promo Code

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Best Home DealsBest Home DealsThe best home, kitchen, smart home, and automotive deals from around the web, updated daily.

Luncia Double-Decker Dish Carrier | $11 | Amazon | Promo code SDDU9S7F

It has been a long time since the days we could safely have a potluck or other gatherings, but we have a fantastic deal perfect for once those times return. These double-decker Luncia dish carriers can be had for 65% off when you add promo code SDDU9S7F at checkout and clip the coupon on the site (it’s just below the price). These holders fit 9″x 13″ sized baking dishes.

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That means you can insulate and keep two dishes of food warm for only $11 instead of $30. What’s more, your Luncia carrier will arrive by Christmas if you order today as a Prime member.

Just add promo code SDDU9S7F and clip the 5% off coupon to bring the price down to $11 for the blue or the grey option.

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Grab this offer while it’s still around!


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Conquer Your Pup’s Dander and Fur With $700 Off a Cobalt or Charcoal Bobsweep PetHair Plus Robot Vacuum

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Best Home DealsBest Home DealsThe best home, kitchen, smart home, and automotive deals from around the web, updated daily.

Bobsweep PetHair Plus Robot Vacuum & Mop (Cobalt) | $200 | Best Buy

Bobsweep PetHair Plus Robot Vacuum & Mop (Charcoal) | $200 | Best Buy

Allergies can be bad enough as the seasons change. Don’t let pet hair and dander add to that by vacuuming it up early and often. That chore is easier said than done— unless you have a robot vacuum to do the work for you. This lovely bright cobalt Bobsweep PetHair Plus robot vacuum and mop, only $200 today at Best Buy seems like an ideal option. That’s a whopping $700 off, by the way.

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You can get the same deal for the charcoal version of the robot vac, too. This model is not only specially made for picking up pet hair, it self docks and charges when it’s finished with the work.

It also comes with a mop attachment, so it can take care of those kitchen floors for you as well. Grab it while it’s still available for this fantastic price!

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