The Apple MacBook Air "Core i5" 1.3 11-Inch (Mid-2013/Haswell) features
a 22-nm "Haswell" 1.3 GHz Intel "Core i5" processor (4250U)
with two independent processor "cores" on a single chip,
a 3 MB shared level 3 cache,
4 GB of onboard 1600 MHz LPDDR3 SDRAM
128 GB of PCIe-based flash storage, and
an "integrated" Intel HD Graphics 5000 graphics processor that shares system memory.

This all is packed in
a razor thin (0.11-0.68 inch),
2.3 pound,
aluminum case with
an integrated 720p "FaceTime HD" webcam,
a backlit full-size keyboard and
an 11.6" widescreen TFT LED backlit active-matrix "glossy" display
(1366x768 native resolution).

Connectivity includes
802.11ac Wi-Fi,
Bluetooth 4.0,
analog audio out,
a "Thunderbolt" port, and
two USB 3.0 ports.

It lacks internal Ethernet.

Compared to its predecessor, this model has effectively the same external enclosure, but it has a much more efficient processor and architecture -- which results in significantly improved battery life -- as well as faster graphics (that reserve more system memory), faster storage, and faster Wi-Fi.

Please note that stock images are used.