*Returns not accepted on any opened, used, or defective product. Contact manufacturer directly for further instructions regarding defective products/parts. From Babyark, this car seat base features: The new standard in car seat safety starts with babyark's innovative Smart Base ™ , featuring the innovative SafeCoil ™ shock-absorbing technology and a smart sensor system for 360° protection. For newborns to 6-year-olds Dual position: Rear-facing: 4-50 lbs. (1.8-22.7 kg) Forward-facing: 26.5-65 lbs. (12-29.5 kg) Innovative energy absorption technology Simple step-by-step app-guided installation The Smart Base ™ is the perfect solution for parents who have already purchased a babyark and either have a second car or are expecting an additional child. It saves you both the cost of getting another car seat, and saves you the hassle of having to install it SafeCoil ™ impact-activated shock-absorbing technology The only convertible car seat with Rigid Latch Anti-Rebound Bar to prevent rebound rotation Front Supporting Leg to prevent forward rotation. Advanced sensor system (14 sensors) to detect any motion and provide critical alerts and notifications Installation guidance and confirmation (both visual and audio) Forgotten Child Alert Buckle alert Same installation for both front and rear facing positions No expiration date Smart base, Charging cable, Lower Anchors Funnels (Guides) Imported.