5.4-inch LED-backlit display with IPS technology, 2880-by-1800 resolution at 220 pixels per inch with support for millions of colors
• 2.2GHz quad-core Intel Core i7 processor (Turbo Boost up to 3.4GHz) with 6MB shared L3 cache
• Full-size backlit keyboard, including 12 function keys and 4 arrow keys with ambient light sensor2.2GHz quad-core Intel Core i7 processor (Turbo Boost up to 3.4GHz) with 6MB shared L3 cache
It also has an integrated 720p FaceTime HD webcam and a high-resolution LED-backlit 15.4″ widescreen 2880×1800 (220 ppi) “Retina” display in a case that weighs just less than 4.5 pounds (2.02 kg). It does not have an internal optical drive. Connectivity includes 802.11ac Wi-Fi, Bluetooth 4.0, two USB 3.0 ports, two “Thunderbolt 2” ports, an HDMI port, an audio in/out port, and an SDXC card slot. In addition, this model has a backlit keyboard, a “no button” glass “inertial” multi-touch trackpad, a “MagSafe 2” power adapter, and an internal, sealed battery that provides an Apple estimated 8 hours of battery life in old macbook pro A1398.