Dell XPS 12 12.5″ 4K Ultra HD Touchscreen 2in1 Laptop Core M5 8GB RAM 256GB SSD – Adorama via ebay – $619.99

http://www.ebay.com/itm/Dell-XPS-…3AFeatured
Designed for brilliance
With its first in class 4K Ultra HD display and innovative magnetic connection, the XPS 12 seamlessly moves from laptop to tablet, perfecting the 2-in-1 experience.
1.1 GHz Intel Core m5-6Y54 Dual-Core
8GB of 1600 MHz LPPDDR3 RAM
12.5" Detachable Multi-Touch Display
3840 x 2160 Screen Resolution
Integrated Intel HD Graphics 515
256GB Solid State Drive
SDXC Media Card Slot
802.11ac Wi-Fi, Bluetooth 4.1
8MP Rear Camera, 5MP Front Camera
Windows 10 Home (64-bit)