Selling My 15" Laptop – Only 3 Months Old, Excellent Condition still under apple warrenty. This laptop is just 3 months old and works perfectly. My work is providing me with an M5 Air, so I no longer need this one. The 15-inch model offers several advantages over the 13-inch version, including: Better speakers for richer sound More screen real estate for productivity and media Improved processing power compared to the smaller 13" model with 2 extra cores. It’s been lightly used, very well taken care of, and is in near‑new condition. Never been taken off my desk.