Cybex Sirona S SensorSafe 3.0 - Urban Black

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Sirona S 360 Swivel Convertible Car Seat with SensorSafe 

The CYBEX Sirona S is the ONLY convertible car seat to feature a 360° swivel seat with a load leg, linear side impact protection, and SensorSafe technology. Built into the chest clip, SensorSafe provides real-time in-app alerts when potentially unsafe situations arise including if a child unbuckles the chest clip, if the back seat becomes too warm or too cold, and if the driver unintentionally leaves the child behind. These features offer advanced safety protection for children and greater peace of mind for parents.

  • ONE-HAND 360° SWIVEL SEAT: For easy loading and unloading of your child
  • LOAD LEG: Absorbs energy and reduces crash forces on the child by up to 30% in a front impact collision*
  • ONE-TIME VEHICLE BELT INSTALLATION: Allows seamless transition from rear-facing to forward-facing mode without having to re-install
  • EASYLOCK™ BAR: Reduces force needed up to 4x for quick, simple and secure installation
  • SENSORSAFE TECHNOLOGY: Bluetooth enabled chest clip sends mobile app alerts if a child unbuckles the chest clip, if the back seat becomes too warm or too cold, and if the driver unintentionally leaves the child behind
  • 12-POSITION ON THE FLY RECLINE: Adjust even when the seat is in use
  • LINEAR SIDE-IMPACT PROTECTION (L.S.P.): Reduces collision forces by up to 25% in a side impact crash*
  • ANTI-REBOUND BASE: Reduces rebound forces in a rear or front impact crash
  • REAR-FACING LONGER: Up to 50 lbs.
  • MAGNETIC BUCKLE HOLDERS: Keeps harness out of the way for easy loading and unloading of your child
  • DISHWASHER SAFE CUP HOLDER: Can be positioned on either side of seat
  • 12-POSITION ADJUSTABLE HEADREST: Harness adjusts with the headrest for a proper fit as your child grows
  • DUAL-LEVEL INDICATORS: Clearly indicate the proper car seat angle from either side of the seat
  • STEEL REINFORCED FRAME: Provides strength and durability
  • 3-POSITION PADDED BUCKLE: Allows for a secure fit while providing extra comfort for your growing child
  • REMOVABLE INFANT INSERT: Ensures proper fit and support for babies
  • *As compared to the same car seat without this feature



  • Child Weight Minimum :: 4lbs
  • Child Weight Max :: 65lbs
  • Rear-Facing Mode Weight Limitation :: 4lbs-50lbs
  • Rear-Facing Mode Height Limitation :: 17in-49in
  • Forward-Facing Mode Weight Limitation :: 22-65 lbs
  • Forward-Facing Mode Height Limitation :: 28-49 in
  • Forward-Facing Mode Age Limitation :: at least 22 lbs
  • Forward-Facing Mode Fit Limitation :: top of ears below the top of the headrest
Expiration (Years)
10 yrs after date of manufacture
2 Year warranty
LIMITED WARRANTY - CYBEX warrants to the original consumer purchaser that this product will be free from defects in material and workmanship for two (2) years from the date of original purchase (the “Warranty Period”). During the Warranty Period, CYBEX, at its option, may repair or replace this product if it is found by the manufacturer to be defective in material or workmanship. CYBEX reserves the right to discontinue or change parts, fabrics, models, or products, or to substitute this product with a comparable model or product. To make a claim under this warranty, please contact us at [email protected], call us at 1–877–242–5676, or write to us at:CYBEX Warranty / ParentLink, Columbus Trading Partners USA Inc, 1801 Commerce Drive, Piqua, OH 45356 An original receipt is required to validate your warranty and shipping charges will be the responsibility of the original consumer purchaser. To expedite the processing of any future warranty claims and to verify the original date of purchase, please complete and mail the pre–addressed owner registration card within thirty (30) days of purchase. WARRANTY LIMITATIONS - This warranty does not cover the effects of normal wear and tear or damages resulting from negligence, modification, improper installation, accidents, misuse or abuse of this product. It is expressly agreed that the obligations of CYBEX and the original consumer purchaser’s remedies under the limited warranty contained herein are exclusive and are strictly limited to the repair or replacement of the product. This limited warranty is conditional upon strict compliance with the provisions of the Owner’s Manual. In no event will CYBEX or the dealer selling this product be liable to you for any damages, including incidental or consequential damages, arising out of the use or inability to use this product. LIMITATION OF WARRANTIES AND STATE/PROVINCIAL LAW RIGHTS The warranty and remedies as set forth above are exclusive and in lieu of all others, oral or written, express or implied. To the extent permitted by applicable law, any implied warranties, including implied warranties of merchantability and fitness for a particular purpose, are hereby disclaimed. Some states/provinces do not allow limitations as to how long an implied warranty lasts or the exclusion or limitation of incidental or consequential damages, so the above limitations may not apply to you. This warranty gives you specific legal rights, and you may have other rights, which vary from state/province to state/province. Neither CYBEX nor the dealer selling this product has authorized any person to create for it any other warranty, obligation, or liability in connection with this product.
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