SKU: 51794454645
cybex eternis s all-in-one convertible car seat

cybex eternis s all-in-one convertible car seat CYBEX Eternis S SensorSafe All-in-One Convertible Car Seat

Sale price$26.05 Regular price$28.94
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Description

cybex eternis s all-in-one convertible car seat CYBEX Eternis S SensorSafe All-in-One Convertible Car SeatThe CYBEX Eternis S with SensorSafe is the only car seat your child will need from their first ride home through every carpool adventure. With its three adaptable modesrear facing, forward facing, and boosterthe Eternis S is designed to protect children from birth up to 120 lbs. Built with CYBEXs signature safety features and thoughtful design, it ensures unparalleled comfort and security for your little one at every stage. From its advanced Linear

The CYBEX Eternis S with SensorSafe is the only car seat your child will need from their first ride home through every carpool adventure. With its three adaptable modes—rear-facing, forward-facing, and booster—the Eternis S is designed to protect children from birth up to 120 lbs. Built with CYBEX’s signature safety features and thoughtful design, it ensures unparalleled comfort and security for your little one at every stage. From its advanced Linear Side-impact Protection (L.S.P.) to the intuitive SensorSafe™ technology that monitors your child’s well-being, this car seat provides peace of mind wherever the road takes you.

What Is SensorSafe? Keeping Your Child’s Safety Front and Center

Equipped with SensorSafe™ technology, the CYBEX Eternis S delivers real-time safety alerts directly to your phone via the SensorSafe app. This innovative chest clip tracks critical safety indicators, such as unbuckling, temperature, and even periods of inactivity, helping you ensure your child’s safety without taking your eyes off the road.

Cybex Eternis S SensorSafe All-In-One Convertible Car Seat Features

3-in-1 Versatility: Switch between rear-facing (4-50 lbs.), forward-facing (22-65 lbs.), and booster (40-120 lbs.) modes to accommodate your child’s growth.
SensorSafe Technology: Safety alerts for peace of mind, including temperature and child unbuckling notifications.
Linear Side-Impact Protection (L.S.P.): Absorbs up to 25% more impact forces in a near side-impact crash.
12-Position Height-Adjustable Headrest: Grows with your child, making adjustments easy with no need to rethread the harness.
Internationally Patented 3-Position Reclining Headrest: Keeps your child’s head in a safe, comfortable position, reducing the risk of forward head slump.
In-Seat Recline and 6-Position Seat Recline: Designed for ergonomic support and extra legroom in the rear-facing position.
Magnetic Buckle Holders: Allows for easy seat entry and exit without searching for the buckle.

Cybex Eternis S SensorSafe All-in-One Convertible Car Seat Weight and Height Limits: How Long Can You Use Cybex Eternis?

Designed to grow with your child, the Eternis S supports rear-facing up to 50 lbs. or until your child reaches 48 inches, forward-facing up to 65 lbs., and then transitions to a high-back booster for children up to 120 lbs. This extended lifespan means your child can enjoy the safety and comfort of the Eternis S for up to 10 years.

Is CYBEX Eternis FAA Approved?

Yes, the CYBEX Eternis S is FAA-approved for air travel, ensuring your child’s safety in-flight. The FAA recommends securing children in an approved child restraint during flights for additional safety during unexpected turbulence. As always, please confirm with your airline before departure and refer to the car seat’s manual for aircraft installation instructions.

Cybex Eternis S SensorSafe All-In-One Convertible Car Seat Manual and Instructions for Installation

Installing the Eternis S is straightforward with CYBEX’s clear, detailed instructions, and it offers LATCH compatibility for secure installation. For a perfect fit and peace of mind, refer to the user manual for guidance on latch, tether, harness, and recline limitations for each mode.

Cybex Eternis S SensorSafe All-in-One Convertible Car Seat Reviews: Why Parents Love It

The CYBEX Eternis S with SensorSafe has received high praise from parents and caregivers who appreciate its seamless blend of safety, comfort, and durability. Many users highlight the SensorSafe technology, noting that it provides an added layer of security, especially for longer drives or busy days. Parents also love the versatile design, allowing them to use one seat for all stages of their child’s growth—from birth up to 10 years. The seat’s sturdy steel-reinforced frame and the unique L.S.P. system are often mentioned in reviews as standout safety features that make parents feel confident in their choice.

Another common highlight is the ease of use. Parents appreciate the adjustable headrest, easy recline options, and magnetic buckle holders, which simplify getting children in and out. Overall, the Eternis S offers long-term value and trusted safety, making it an exceptional investment in your child’s travel safety.

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Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
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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.
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SKU: 51794454645

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4.1 ★★★★★
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Verified Purchase
Darren Beltran
New York, US
★★★★★ 4
Looks amazing when on the wrist.
Color: Silver White
Pretty impressive for the price. Wears much smaller than I expected and super light on the wrist. I was going to change the bracelet but it completes the esthetic of the watch and has gotten compliments.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 7, 2025
S
Verified Purchase
S. Larson
Charlottesville, US
★★★★★ 5
Watch is nice but band is tricky to close properly
Color: Gold Black
I just received the watch and could not figure out how to lock the band correctly. I was at the watch repair store today and the lady there showed me how to close it properly so the band doesn’t come unhooked.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 12, 2025
M
Verified Purchase
MrChiSox
Massapequa, US
★★★★★ 1
Mechanical watch
Color: Silver Black
All those watches very attractive looking and after I got it adjusted to my size damn thing stopped working soon as I got to set the time and she'll get to make it run he won't keep the time he keeps stopping every minute do not buy this
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 12, 2025
B
Verified Purchase
Brandy
Pawtucket, US
★★★★★ 5
great first impression
Color: Black Silver L
ok so I just got this and i'm not sure how accurate the timekeeping is yet - but it looks fantastic and the band was easy to adjust with the instructions provided. may have to update once I have had it for a while but first impression is A+!
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Reviewed in the United States on February 6, 2026
I
Verified Purchase
IKZ
Bozeman, US
★★★★★ 3
It's hand wind watch
Color: Silver Black, Color: Silver Black
Last time I had hand wound watch was thirty years ago, so I was very happy to find this watch. Very stylish, has scratch resistant glass and is stainless steel. Completely not waterproof. Got rained on one day for the very short distance and the watch got fog into in. It took whole day and desiccate packages to get the steam out of the dial. Thirty clockwise winds keep the watch ticking for about seventeen hours. It is also somewhat hard to wind. The quality inspection on the band is pretty low. When arrived, clasp was loose in closing. I needed to take pliers and move the closing latch hook more up to securely close clasp. Now its perfect. Video shows how to adjust length of the clasp. Very easy with provided screwdriver. Just stick screwdriver into the hole and move back to open clasp and forward to close. Don't try to close it with the fingers. It is really hard to do it that way. If I wind it before bed and in the morning, it never stops and keeps time good. The size of the dial is perfect; but the height is very thick. Takes some time to get used to. Over all it is a very pretty watch and decent for the price tag.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 3, 2026

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