# Convertible car seats with magnetic buckle or chest clip parts

Which convertible car seats have magnets on the buckle or chest clip that should be kept away from electronics?

CYBEX Sirona M SensorSafe 2\.0: Testers liked the easy headrest, harness and recline adjustment range and the magnetic buckle holders, but found the cup holder difficult for toddlers to reach\. Cybex Sirona S SensorSafe: The Bluetooth chest clip can alert the app when it is unbuckled, the rear seat becomes too hot or cold, or the driver leaves the child behind\.

### 1. [CYBEX Sirona M SensorSafe 2\.0](/products/ucp/anbbaby-com/2820553310308) (sold by anbbaby\.com)

Testers liked the easy headrest, harness and recline adjustment range and the magnetic buckle holders, but found the cup holder difficult for toddlers to reach\.

- Magnetic buckle or clip parts: Testers liked the easy headrest, harness and recline adjustment range and the magnetic buckle holders, but found the cup holder difficult for toddlers to reach\. (review) <https://mommyhood101.com/cybex-sirona-review>
- Chest clip alerts: SensorSafe can alert a smartphone when a buckled child remains after shutdown, the clip opens during travel, rear\-seat temperature is uncomfortable or sitting time is extended; alerts may escalate to emergency contacts with GPS coordinates\. (guide) <https://anb-baby.myshopify.com/products/sirona-m-sensor-safe>

### 2. [Cybex Sirona S SensorSafe](/products/ucp/anbbaby-com/4553341763670) (sold by anbbaby\.com)

The Bluetooth chest clip can alert the app when it is unbuckled, the rear seat becomes too hot or cold, or the driver leaves the child behind\.

- Magnetic buckle or clip parts: -
- Chest clip alerts: The Bluetooth chest clip can alert the app when it is unbuckled, the rear seat becomes too hot or cold, or the driver leaves the child behind\. (guide) <https://www.cybex-online.com/en/us/sirona-s-gold_us.html>

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Written 2026-10-11T00:18:28.370Z.

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