Touch Bar MacBook Pro models have non-upgradeable SSDs, seemingly under-sized batteries - 9to5Mac
Apple A Grade Macbook 12-inch (Retina, Rose Gold) 1.1GHz Core m3 (Early 2016) MMGL2LL/A 256 GB SSD 8 GB Memory 2304x1440 Display Mac OS X v10.12 Sierra Power Adapter Included - Walmart.com