· Features Magnetic DC Connector:The magnetic DC connector makes it easy to disconnect harmlessly the cord if someone should trip over it,your Mac Book Air stays put safely,and also helps prevent fraying or weakening of the cables over time. · Input: AC 100-240V 50-60Hz, Output: 14.85V 3.05A 45W. Knowing what specific Mac model you have is important.Please check out carefully Before Purchasing. · Security Assurance:Replacement mac air chargers manufactured with the highest quality materials and include multiple smart features safeguarding against over current,over voltage,over load,short-circuit protection and auto recovery,CE/FCC/RoHS certified · Fully compatible: Part Number:A1466 A1465 A1435(Please check your model before purchasing); Mac Book Air (13-inch, Mid 2012); Mac Book Air (11-inch, Mid 2012); Mac Book Air (13-inch, Mid 2013); Mac Book Air (11-inch, Mid 2013); Mac Book Air (13-inch, Early 2014); Mac Book Air (11-inch, Early 2014); Mac Book Air (13-inch, Early 2015); Mac Book Air (11-inch, Early 2015); Mac Book Air (13-inch, 2017) · Satisfication Guarantee: Power Adapter With 12 Months warranty, 60 Days money return guarantee and 24h/every day email support.