Our Charger features a Built-in heat sink dissipates heat to keep the charger from overheating and mac Book pro laptop charger runs safe and cold during the entire charging cycle. 60W Power Adapter.Input:100 - 240V,50-60H Output:16.5V 3.65A Fully compatible with Mac Book Pro (Retina, 13-inch, Early 2015); Mac Book Pro (Retina, 13-inch, Mid 2014); Mac Book Pro (Retina, 13-inch, Late 2013); Mac Book Pro (Retina, 13-inch, Early 2013); Mac Book Pro (Retina, 13-inch, Late 2012);Mac Book Air after Late 2012 Part Number: A1435, A1465, A1502, A1425,A1436,A1466. The charger features a magnetic connector that ensures your power cable will disconnect harmlessly if it experiences undue strain and helps prevent fraying or weakening of the cables over time. In addition, the magnetic helps guide the plug into the system for a quick and secure connection. 0W Power Adapter.Input:100 - 240V,50-60H Output:16.5V 3.65A Universal Wattage Charger:Our 60W charger fully Compatible with mac book pro retina 13-inch and mac Book air after Late 2012, including models that come with 60W and 45W.The laptop will only draw the wattage needed and will not damage the laptop. If you have multiple laptop, this is the perfect interchangeable charger.