CybexSirona M SensorSafe 2.0 Convertible Car Seat


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color: Lavastone Black



What weabout it
A convertible seat for use from 5–65 lbs, with integrated technology to alert you if your child isn't safe.

About this Product
  • Integrated SensorSafe 2.0 technology monitors the well-being of the seated child
  • Adjustable Linear Side Impact Protection System
  • 12-position height adjustable headrest with no-rethread harness
  • Rear-facing installation up to 40 lbs; forward installation up to 65 lbs
  • Removable newborn inlay supports babies 5 lbs and up


This convertible car seat scores high marks for crash protection and also syncs with your smartphone to bring safety to a whole new level: sensors in the chest clip alert you when your baby is in an unsafe situation. The seat can be used from birth to 65 pounds, and your child can stay in the safer, rear-facing position up to 40 pounds (about 4 years old).

In terms of crash safety, the Sirona M has an adjustable linear side-impact protection system that can reduce side impact forces by up to 25% when used properly. The 12-position height adjustable headrest with integrated no-rethread harness grows with your child. The rear-facing position reduces strain along the child’s neck and head in the case of a head-on collision, and the Sirona M can keep your child safer longer by allowing them to sit rear facing up to 40 pounds.

Newborns can also ride in the Sirona M thanks to the included newborn inlay. It provides support for premature and smaller babies (from 5 to 11 pounds) in an ergonomically ideal position. The inlay rests at a near-flat angle to help prevent your baby’s head from tipping forward during naps, which can lead to breathing problems. Remove the insert when your baby reaches 11 pounds.

The Sirona M also monitors the well-being of the seated child through the SensorSafe 2.0 smart chest clip that is synced with the installed vehicle receiver and the caregiver’s smartphone. When the car is in motion, the SensorSafe 2.0 system will chime through the installed vehicle receiver to let you know if your child isn’t properly buckled or has unbuckled themselves, if the seat reaches uncomfortable or dangerous temperatures or if your child has been seated for too long.

When you turn off the car, the SensorSafe 2.0 will remind you to take your child out of the carseat. If your child hasn’t been unbuckled after several minutes, an alert will be sent to the caregiver’s cellphone through the downloaded app. If the child still remains in the car, designated emergency contacts will receive alerts with GPS coordinates for the vehicle’s location. For the system to work, you need downloaded the app, and you need to keep the receiver plugged into your car’s OBD port. Once installed, the app is user-friendly, with tech help built in.


  • Use from birth to 65 lbs (approx. 4 years)
  • Rear facing: 5–40 lbs
  • Forward facing: 22–65 lbs
  • Infant insert: 5–11 lbs
  • 21.5” x 20” x 25”
  • Weight: 24.7 lbs
  • Dishwasher safe cup holder included: can be positioned on either side
  • One-hand adjustable, 10-position recline
  • Magnetic belt holders
  • Dual Level Indicator for seat installation
  • Hand wash, line dry
  • Engineered and designed in Germany

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