Power: 85W, INPUT: AC 100-240V, 50-60Hz; OUTPUT: DC 18.5V-4.6A; MagSafe2 (T-Tip) Connector; Replacement charger AC adapter for Apple MacBook Pro 15 After 2012 with Model: A1398MacBook Pro 13 After 2012 with Model: A1425A1502; Replaces A1424 ChargerCompatible with MacBook Pro 15 inch, MJ2C, 2MGA, ME293, ME294, ME664, ME665, MC975, MC976MacBook Pro 13 inch MD212, MD213, MD662, ME864, ME865, ME866, MGX72, MGX82, MGX92, MF839, MF840, MF841. An LED light provides feedback; an amber light indicates that your laptop is charging, while a green light indicates that you have a full charge. Replacement chargers made from the highest quality materials and include multiple smart features that protect against IV - incorrect voltage, SC - short circuit, IO - internal overheating. It is held in place magnetically, so if someone trips over it, the cord disconnects harmlessly and your laptop remains safe.