---
product_id: 662397693
title: "Cybex Sirona S with Convertible Car Seat, 360° Rotating Seat, Rear-Facing or Forward-Facing Car Seat, Easy Installation, SensorSafe Chest Clip, Instant Safety Alerts, Urban Black"
brand: "cybex"
price: "₨82705"
currency: LKR
in_stock: true
url: https://www.desertcart.lk/products/662397693-cybex-sirona-s-with-convertible-car-seat-360-rotating-seat
store_origin: LK
region: Sri Lanka
---

# SensorSafe instant safety alerts 360° rotatable seat EasyLock Bar reduces installation force 4x Cybex Sirona S with Convertible Car Seat, 360° Rotating Seat, Rear-Facing or Forward-Facing Car Seat, Easy Installation, SensorSafe Chest Clip, Instant Safety Alerts, Urban Black

**Brand:** cybex
**Price:** ₨82705
**Availability:** ✅ In Stock

## Summary

> 🚗 Safety Meets Smart Style: The Ultimate 360° Convertible Car Seat for Modern Parents

## Quick Answers

- **What is this?** Cybex Sirona S with Convertible Car Seat, 360° Rotating Seat, Rear-Facing or Forward-Facing Car Seat, Easy Installation, SensorSafe Chest Clip, Instant Safety Alerts, Urban Black by cybex
- **How much does it cost?** ₨82705 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.lk](https://www.desertcart.lk/products/662397693-cybex-sirona-s-with-convertible-car-seat-360-rotating-seat)

## Best For

- cybex enthusiasts

## Why This Product

- Trusted cybex brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Custom Fit Growth:** 12-position adjustable headrest and no-rethread harness ensure a perfect, comfortable fit as your child grows.
- • **SensorSafe Smart Alerts:** Stay connected with real-time app notifications for unbuckling, temperature changes, and forgotten child alerts.
- • **EasyLock Bar Installation:** Secure your car seat with up to 4x less force and dual-level recline indicators for perfect positioning every time.
- • **360° Rotating Convenience:** Effortlessly switch between rear and forward-facing modes for quick, stress-free child access.
- • **Advanced Safety Engineering:** Linear Side-Impact Protection absorbs 25% more impact, while anti-rebound design minimizes crash movement.

## Overview

The Cybex Sirona S is a premium convertible car seat featuring a unique 360° rotating seat for effortless switching between rear and forward-facing modes. It includes an EasyLock Bar that simplifies installation by reducing force needed by up to 4 times, and SensorSafe technology built into the chest clip that sends instant safety alerts via app. Designed with superior protection, it offers Linear Side-Impact Protection that absorbs 25% more impact and an anti-rebound system to reduce crash movement. The seat grows with your child thanks to a 12-position adjustable headrest and a no-rethread harness system, all wrapped in a sleek Urban Black design.

## Description

The CYBEX Sirona S is the first convertible car seat in the U.S. to feature an innovative 360° rotatable seat with a load leg, making switching between rear-facing and forward-facing positions quick and easy. This rotatable seat, along with magnetic buckle holders, makes it easy to get your child in and out. Designed for safety, the Sirona S features a steel-reinforced frame and anti-rebound design that reduces car seat rebound movement. Linear side-impact protection system absorbs up to 25% more impact in a collision when compared to the same car seat without L.S.P. extended. A one-time belt installation secures both forward and rear-facing positions. Our EasyLock™ Bar works with your vehicle belt for easy and secure installation, while the dual-level indicators ensure the car seat is at the proper angle. Adjust your Sirona S as your child grows, with a 12-position headrest with no-rethread harness. SensorSafe™ technology in the chest clip syncs automatically with your mobile app and provides alerts of unsafe situations, including if a child unbuckles themselves; if the back seat is too warm or cold, if a child has been seated for too long, or if the driver accidentally leaves the child behind.

## Features

- Convertible Car Seat: The first car seat in the U.S to feature an innovative 360° rotatable seat, the Sirona S makes it quick and easy to switch between rear-facing and forward-facing positions and get your child in and out of the car.
- EasyLock Bar: Reduces the force needed up to 4x for simple and secure car seat installation. Dual-level indicators ensure that your car seat is at the correct recline angle while our load leg can reduce rotation in certain crashes by up to 30%.
- SensorSafe: Built into the chest clip, SensorSafe provides app alerts if a child unbuckles themselves; if the back seat has become too warm or too cold, if a child has been seated for too long, or if the driver accidentally leaves the child behind.
- Superior Protection: Linear side-impact protection (L.S.P.) absorbs up to 25% more impact in a collision compared to the same car seat without L.S.P. extended while the anti-rebound design reduces car seat rebound movement in the event of a crash.
- Adjustable Headrest: Make sure your car seat is always a perfect fit with 12 different headrest positions. The Sirona S harness adjusts without re-threading, making it easier to adjust the height of the shoulder straps as your child grows.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Model Number | 519004435 |
| Product Dimensions | 64.26 x 50.8 x 64.77 cm; 13.79 kg |
| Item model number | 519004435 |
| Target gender | Unisex |
| Minimum Weight Recommendation | 3 Kilograms |
| Maximum Weight Recommendation | 29.48 kg |
| Minimum Height Recommendation | 17 inches |
| Maximum Height Recommendation | 49 Inches |
| Material Type | Polyester |
| Material composition | 100% Polyester |
| Care Instructions | Machine Washable |
| Number of items | 1 |
| Style | Car Seat |
| Number of reclining positions | 12 |
| Batteries required | Yes |
| Orientation | Rear Facing |
| Rear-facing minimum child weight | 4 Pounds |
| Rear-facing maximum child weight | 50 Pounds |
| Forward-facing minimum child weight | 22 Pounds |
| Forward-facing maximum child weight | 65 Pounds |
| Harness type | 5-Point |
| Item Weight | 13.8 kg |

## Product Details

- **Brand:** Cybex
- **Installation type:** Latch
- **Material:** Polyester
- **Colour:** Urban Black
- **Orientation:** Rear Facing
- **Product dimensions:** 64.3D x 50.8W x 64.8H centimetres
- **Item weight:** 13.79 kg
- **Maximum weight recommendation:** 65 Pounds
- **Harness type:** 5-Point
- **Number of height positions:** 12

## Images

![Cybex Sirona S with Convertible Car Seat, 360° Rotating Seat, Rear-Facing or Forward-Facing Car Seat, Easy Installation, SensorSafe Chest Clip, Instant Safety Alerts, Urban Black - Image 1](https://m.media-amazon.com/images/I/51-+4YYyVsL.jpg)
![Cybex Sirona S with Convertible Car Seat, 360° Rotating Seat, Rear-Facing or Forward-Facing Car Seat, Easy Installation, SensorSafe Chest Clip, Instant Safety Alerts, Urban Black - Image 2](https://m.media-amazon.com/images/I/61dC5jj+bdL.jpg)
![Cybex Sirona S with Convertible Car Seat, 360° Rotating Seat, Rear-Facing or Forward-Facing Car Seat, Easy Installation, SensorSafe Chest Clip, Instant Safety Alerts, Urban Black - Image 3](https://m.media-amazon.com/images/I/61yEbrW3zVL.jpg)
![Cybex Sirona S with Convertible Car Seat, 360° Rotating Seat, Rear-Facing or Forward-Facing Car Seat, Easy Installation, SensorSafe Chest Clip, Instant Safety Alerts, Urban Black - Image 4](https://m.media-amazon.com/images/I/61HgV9S4vAL.jpg)
![Cybex Sirona S with Convertible Car Seat, 360° Rotating Seat, Rear-Facing or Forward-Facing Car Seat, Easy Installation, SensorSafe Chest Clip, Instant Safety Alerts, Urban Black - Image 5](https://m.media-amazon.com/images/I/61eZEhKKSAL.jpg)

## Questions & Answers

**Q: Does it alert you if you forget to take the baby out of the car after the car is turned off?**
A: I do not own this carseat but a friend does. I am someone who got alerted that my friends child was left in car, and where car was. Because of covid child was being cared for by relative who normally did not care for the child. Child is fine care of alert. Thank you to whoever came up with this

**Q: I installed this with the seatbelt and latch and it’s wobbly. i feel like i can tip it over. what did i do wrong?**
A: This seat only allows for install using one method - Seat Belt, or Latch, not both at the same time.  I would reccomend installing using seat belt - oncle you click it, pull the extra slack in the seat belt down where the buckle is, and then route the shoulder belt portion the rest of the way before you lock off - most times, the installer leaves too much slack in the lower belt and that is why it moves for any car seat.

**Q: Why is this car seat not stable? it wobbles side by side .**
A: Most have better luck installing this with the seat belt, over the latch system. The user manual also states, "In some vehicles in the most 
reclined position, it may be necessary 
to place a rolled towel or small blanket 
beneath (not behind) the Child Restraint 
near the seat back to provide enough 
recline so that the Recline Ball is in the 
BLUE ZONE for REAR-FACING use.
NOTE: Only items approved by CYBEX 
are allowed under Base."

**Q: Will this fit in a Chevy trailblazer?**
A: Some child restraints do not fit all vehicles or all seating positions. There are so many different combinations of vehicle makes, models, child restraint configurations, seat belt designs and seat cushion designs.  Dimensions of the seat  H 25.5” x W 20” x D 25.3”.

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*Product available on Desertcart Sri Lanka*
*Store origin: LK*
*Last updated: 2026-01-27*