About this item Safe and Efficient voltage: Input: 100-240V 50/60 Hz Output: 14.85V 3.05A Adaptive Model: Mac Book Air (11-13 inch, early 2015), (11-13 inch, early 2014), (11-13 inch, mid 2013), (11-13 inch, mid 2012), Model: A1435, A1436, A1465, A1466. Smart LED: LED indicator shows amber while charging and turns green when fully charged. Safe: Built-in advanced protection systems ensure safety and charging efficiency. Dimensions: 5.12 x 4.49 x 1.46 inches.