Sure, here's a refined and simplified title focusing on the product keywords: *Cybex Sirona S Rotating Car Seat with SensorSafe 2.1, Newborn to Four Years, Easy Load, Indigo Blue**

The Sirona S, the first car seat in the U.S. to feature an innovative 360° rotatable seat, makes it quick and easy to switch between rear-facing and forward-facing positions and get your child in and out of the car. The EasyLock Bar reduces the force needed up to 4x for simple and secure car seat installation, and dual-level indicators ensure that the car seat is at the correct recline angle, while the load leg can reduce rotation in certain crashes by up to 30%.

SensorSafe, built into the chest clip, 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. The Sirona S offers superior protection, with Linear side-impact protection (L.S.P.) that absorbs up to 25% more impact in a collision compared to the same car seat without L.S.P. extended, and an anti-rebound design that reduces car seat rebound movement in the event of a crash.

To ensure a perfect fit as your child grows, the Sirona S features an adjustable headrest with 12 different positions, and the harness adjusts without re-threading, making it easier to adjust the height of the shoulder straps.

The Sirona S is a comprehensive and advanced car seat that prioritizes safety, comfort, and convenience for both parents and children. Its innovative features, such as the 360° rotatable seat, EasyLock Bar, SensorSafe, and superior protection, make it a standout choice in the world of car seats.

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