Apple macbook air 13 256GB inch(2018 edition)

Display
Retina Display: 13.3-inch (diagonal) LED-backlit display with IPS technology; 2560-by-1600 native resolution at 227 pixels per inch with support for millions of colors

Supported scaled resolutions: 1680 by 1050, 1440 by 900, 1024 by 640, 16:10 aspect ratio
Touch ID: Integrated Touch ID sensor
Processor: 1.6GHz dual-core Intel Core i5, Turbo Boost up to 3.6GHz, with 4MB L3 cache
Storage: 256GB PCIe-based SSD
Memory: 8GB of 2133MHz LPDDR3 onboard memory
Configurable to 16GB of memory

Battery and Power
Up to 12 hours wireless web
Up to 13 hours iTunes movie playback
Up to 30 days of standby time
Built-in 50.3‑watt‑hour lithium‑polymer battery
30W USB-C Power Adapter; USB-C power port

Size and Weight:
Height: 0.16–0.61 inch (0.41–1.56 cm)
Width: 11.97 inches (30.41 cm)
Depth: 8.36 inches (21.24 cm)
Weight: 2.75 pounds (1.25 kg)3

Graphics:
Intel UHD Graphics 617
Support for Thunderbolt 3–enabled external graphics processors (eGPUs)

Video Support
Simultaneously supports full native resolution on the built-in display at millions of colors and:
One external display with 5120-by-2880 resolution at up to 60Hz
Up to two external displays with 4096-by-2304 resolution at up to 60Hz
Thunderbolt 3 digital video output
Native DisplayPort output over USB‑C
VGA, HDMI, and Thunderbolt 2 output using adapters (sold separately)

Camera
720p FaceTime HD camera

Charging and Expansion
Two Thunderbolt 3 (USB-C) ports with support for:

DisplayPort
Thunderbolt (up to 40 Gbps)
USB-C 3.1 Gen 2 (up to 10 Gbps)

Wireless
802.11ac Wi-Fi wireless networking; IEEE 802.11a/b/g/n compatible
Bluetooth 4.2 wireless technology

Audio
Stereo speakers
Three microphones
3.5 mm headphone jack

Keyboard and Trackpad
Full-size backikt keyboard