Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 12 - Jul 17
Promo Codes Available:
For Your Every Summer RSVP, with Code: SUMMER15
Description
Serenity Choice™ SleepA moderate snorer reaches 50 60 dB while severe snoring can hit 90 dB. To put that in perspective a car horn is around 90 dB! Serenity Choice Sleep reduces the sound level by 24 dB, eliminating or reducing sound to a non intrusive level. Serenity Choice Sleep is designed to allow air to enter the ear. This has two advantages over competing products; Limits or stops that uncomfortable hot irritation feeling in your ear. Helps reduce the feeling of
A moderate snorer reaches 50-60 dB while severe snoring can hit 90 dB. To put that in perspective - a car horn is around 90 dB! Serenity Choice™ Sleep reduces the sound level by 24 dB, eliminating or reducing sound to a non-intrusive level.
Serenity Choice™ Sleep is designed to allow air to enter the ear. This has two advantages over competing products;
- Limits or stops that uncomfortable ‘hot’ irritation feeling in your ear.
- Helps reduce the feeling of ‘hearing your pulse’ caused by restricting blood flow in the ear, especially noticeable when laying on your side.
Sleeping with ear tips will take a little getting used to, as it can sound unnaturally quiet for the first night. After that you’ll wonder why you didn’t use them earlier.
Product specific benefits
- A perfect fit is guaranteed: Small, medium, and large ear tips included in package. Extra large size available on request.
- Hygienic: Acoustic filters are fitted with advanced mesh technology. They ensure that your ears remain well ventilated at all times.
- Hypoallergenic: Ear tips are made from medical grade TPE.
- Value for money: Ear tips can be used multiple times.
- Natural: Natural hearing is preserved, which facilitates situational awareness.
Features:
- Reduces the effect of a partner snoring
- Noisy hotels – reduces noise from elevators, revelers, kitchen noise, etc.
- Street noise – reduction in car noise, garbage collection, revellers, etc.
- Deeper rest
Accessories:
- 2 ear tips of each size S, M, L
- Two acoustic filters 24 dB
- Aluminum key-ring carrying case
- Multilingual manual
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
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
4.5 ★★★★★
Based on 1685 reviews
Sort
Product Reviews
★★★★★ 5
Great Place to Start
Format: Paperback
Clear and entertaining
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 17, 2026
★★★★★ 5
Engaging Read for Beginners and Techies Alike
Format: Paperback
An engaging and accessible exploration of how computers really work. The author breaks down complex concepts into simple, relatable explanations, making topics like binary, logic gates, and basic circuits far less intimidating. For newcomers, it’s a great way to build a foundational understanding of computer theory with just a touch of electrical engineering.
As someone with a technical background, I still found it entertaining; the examples and analogies added fresh ways to frame ideas I already knew. It’s the kind of book that can bridge the gap between “I use computers” and “I understand what’s happening under the hood.”
Highly recommended for anyone curious about what makes hardware and software tick, whether you’re starting from scratch or just want a new perspective.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 19, 2025
★★★★★ 5
CODE is the book you should get.
Format: Paperback
The best book to enter the field. Grateful that Charles Petzold decided to write it, even happier this was one of the first books I picked up.
Recommend to everyone wanting to become a programmer, or just interested in computers.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 12, 2026
★★★★★ 5
If you only buy one technical computer book, this is it
Format: Paperback
Disclaimer: I owned the first edition for years and read it a dozen times, mainly for pleasure since it’s not only informative but also just enjoyable to read. I’m a professional software architect and have dozens of textbooks on computer science and engineering so I’ve been around the block.
This is the kind of book I would buy all for all my friends (if I had more than a couple) and family members (if they were even slightly into computers, which they aren’t sadly). Petzold does an exceptional job at describing digital logic and guides you through building a conceptual CPU from very first principles.
I think his bottom up approach is the way to go and has helped me understand complex topics in an extremely simple way. When I’m not reading fiction, this is my go to bedtime reading.
The second edition has about 100 more pages than the first and some content has been completely reworked and it’s great.
If you ever had even a passing interest in knowing how computers work at a very fundamental level, get this book!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 31, 2023
★★★★★ 4
First programmer?
Format: Paperback
As an ardent reader of the past 1st edition, I was fairly excited to get the latest version. That is, until I encountered the history chapter of the new edition.
For one thing, what I do NOT understand in this second edition is the newly added description of August Ada Byron (countless of Lovelace). The author claims it was Babbage who was the first programmer to design the engines, not Ada. I am not trying to start a futile argument here about who has more or fewer contributions, etc.
What I am trying to assert here is that it is undisputed that Ada (unless the new evidence arises) left *the very first demonstration* of what this seemingly imaginary machine, which didn't even physically exist, was capable of through her program. Because Babbage designed the engine itself, that doesn't automatically put him in the position of a programmer (despite Babbage being a brilliant engineer/scientist and may have had a simple or detailed program in his mind). However, it was Ada who gave a definite touch to programming concepts that ultimately led to modern-day programming. Ada deserves more recognition than a mere "tutorial writer," and she is certainly entitled to the title she deserves.
Other than that, like the previous edition, this book is a must-read for people who are from related/unrelated fields. I always loved the 1st edition, and I would do too with the 2nd. Still, I think history should always be approached with more care, particularly if matters have potential controversies.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 6, 2023