MacBook Pro (Retina, 13-inch, Late 2013) - Technical Specifications - Apple Support
Apple MacBook Pro 15-inch 2.7GHz Quad-core i7 (Retina, Early 2013),MacBook Pro 13,MacBook Pro (Retina, 13-inch, Late 2013) - Technical Specifications - Apple Support,apple-history.com / MacBook Pro (Retina, 13-inch, Early 2013)