Tested In-Depth: Apple 12-Inch MacBook (2015) - YouTube
Restored Apple Macbook Pro 13.3-inch (Retina) 2.7Ghz Dual Core i5 (Early 2015) MF839LL/A 128GB SSD 8 GB Memory 2560x1600 Display Mac OS X v10.12 Sierra Power Adapter Included (Refurbished) - Walmart.com
12-inch MacBook month review: A great new Mac if you manage your expectations (Video) - 9to5Mac