Okay, so all of the models have you choose from either a 3200x1800 display (standard) or a 1080p variant optionally, with a very good IPS panel.
CA
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The CA comes in at at 1.23CM and 1.2KG with 10 hours of battery life.
Specs:
512GB SSD
8GB RAM
3x USB3.0
802.11ac wireless
Also features passive fanless cooling.
The main problem is that it comes with a m3-6Y30 which is an absolutely terrible CPU.
Stay away!
The next one, the UA, has an i7 6500U Processor, a 512GB SSD, 8GB RAM, 802.11ac wifi, 12 hours of battery life and two USB 3.0 connectors.
Comes in at 1.6cm thick and 1.3kg.
The FA is a budget, cut down version of the CA, essentially the bargain bin of the lot.
Pretty much in conclusion, unless you're going to...