MacBook Air 2015, 13 inches Intel Core i5 1.6 GHz Processor 4GB Ram 128GB SSD

– 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:

• 128GB PCIe-based SSD
  Configurable to 512GB or 1.5TB SSD

– Memory:

• 4GB of 2133MHz LPDDR3 onboard memory
  Configurable to 16GB of memory

– Battery and Power:

• Battery Cycles: 275 Cycles
• 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:

• Charging
• 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

– Operating System:

• macOS

macOS is the operating system that powers everything you do on a Mac. macOS High Sierra brings new features inspired by its most powerful users but designed for everyone.