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RV3028 Real-Time Clock (RTC) Breakout
RV3028 Real-Time Clock (RTC) Breakout
RV3028 Real-Time Clock (RTC) Breakout
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RV3028 Real-Time Clock (RTC) Breakout

Marsoni M251S
Sale price$22.00
Pay 4 payments of $5.50 a month.Shop Pay
Get it in 3 business days with 1 day shipping. Friday, May 29
RV3028 Real-Time Clock (RTC) BreakoutThe RV3028 Real Time Clock (RTC) Breakout is an ultra low power (~100 nA), highly accurate Swiss made RTC perfect for adding timekeeping functionality to your projects. Featuring an onboard tiny silver oxide battery, it keeps time even when your device is powered off, ensuring continuous and reliable time maintenance. The breakout board offers a factory calibrated RTC with an accuracy of 1 second drift per million seconds at 25C, surpassing typical
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  • Standard: 3-7 business days
  • Fast: 2-3 business days
  • Express: 1-2 business days

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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
4.2 ★★★★★
Based on 1632 reviews
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Product Reviews
H
Verified Purchase
Humberto Sequeira
Belleville, US
★★★★★ 4
100% functional watch
Light is subpar , but a 100% functional. Digits size is fine (I am 60). Labels could be brighter, but Casio rarely does modifications to these models. My dad has the same model, now over 15 years.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 21, 2026
S
Verified Purchase
steven strause
Belleville, US
★★★★★ 5
Great watch.
Great watch, I mean it’s a Casio so that’s not exactly a hard sell but it looks great if this is your style of watch. I have “a few” watches and about 30 Casios this one is a fun design with a lot of functionality.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 2, 2025
A
Verified Purchase
A. D. Smith
Los Angeles, US
★★★★★ 5
Great digital watch
Like all of my other Casio digital watches, this one works great and was a very good deal.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 12, 2026
E
Verified Purchase
Ed B.
Los Angeles, US
★★★★★ 5
Solid, durable watch
This is a solid add to my collection. Casio doesn't make a bad watch, this AE-2000W-1AVCF has all the functionality and durability we've come to expect from Casio. Easy recommendation, especially at this price.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 8, 2025
J
Verified Purchase
justpassingthrough
Charlottesville, US
★★★★★ 5
Casio for the Win
I have the Casio W-218 (which is still kicking) and wanted an upgrade. This model has everything I need; full date, more water resistance, mineral glass, and is aesthetically pleasing. The 10 Year Battery is an added bonus. Like most Casio watches this one is easy to set up and use. Fits great on the wrist and functions very well. I plan on buying a replacement strap eventually but I expect no issues from the watch itself.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 22, 2026

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