Early 2015 model. One year old, immaculate condition as if it were fresh out the box. No marks or any type of damage. Selling to replace with iMac. Spec: 2.7GHz Processor, 128 GB Storage (SSD), 2.7GHz dual-core Intel Core i5 (Turbo Boost up to 3.1GHz), 8GB 1866MHz LPDDR3 memory, 128GB PCIe-based flash storage1, Intel Iris Graphics 6100, Built-in battery (10 hours) and Force Touch trackpad. Boxed with original power adapter. Has been formatted for new buyer running latest version of OS X El Capitan. No offers.