Specs

Retina display15.4-inch (diagonal) LED-backlit display with IPS technology; 2880-by-1800 native resolution at 220 pixels per inch with support for millions of colors
Supported scaled resolutions:
1920 by 1200
1680 by 1050
1280 by 800
1024 by 640
500 nits brightness
Wide color (P3)
True Tone technologyProcessor2.9GHz 6-core Intel Core i9, Turbo Boost up to 4.8GHz, with 12MB shared L3 cacheGraphicsRadeon Pro 555X with 4GB of GDDR5 memory and automatic graphics switchingCharging and ExpansionFour Thunderbolt 3 (USB-C) ports with support for:
Charging
DisplayPort
Thunderbolt (up to 40 Gbps)
USB 3.1 Gen 2 (up to 10 Gbps)Keyboard and TrackpadFull-size backlit keyboard with:
64 (U.S.) or 65 (ISO) keys including 4 arrow keys
Touch Bar with integrated Touch ID sensor
Ambient light sensor
Force Touch trackpad for precise cursor control and pressure-sensing capabilities; enables Force clicks, accelerators, pressure-sensitive drawing, and Multi-Touch gesturesWireless802.11ac Wi-Fi wireless networking; IEEE 802.11a/b/g/n compatibleBluetoothBluetooth 5.0 wireless technologyCamera720p FaceTime HD cameraVideo SupportSimultaneously supports full native resolution on the built-in display at millions of colors and:
Up to two displays with 5120-by-2880 resolution at 60Hz at over a billion colors
Up to four displays with 4096-by-2304 resolution at 60Hz at over a billion colorsThunderbolt 3 digital video outputNative DisplayPort output over USB-C
VGA, HDMI, and Thunderbolt 2 output supported using adapters (sold separately)AudioStereo speakers with high dynamic range
Three microphones
3.5 mm headphone jackBattery and PowerUp to 10 hours wireless web
Up to 10 hours iTunes movie playback
Up to 30 days of standby time
Built-in 83.6-watt-hour lithium-polymer battery
87W USB-C Power AdapterOperating RequirementsLine voltage: 100V to 240V AC
Frequency: 50Hz to 60Hz
Operating temperature: 50° to 95° F (10° to 35° C)
Storage temperature: -13 to 113 F (-25 to 45 C)
Relative humidity: 0% to 90% noncondensing
Operating altitude: tested up to 10,000 feet
Maximum storage altitude: 15,000 feet
Maximum shipping altitude: 35,000Size and WeightHeight: 0.61 inch (1.55 cm)
Width: 13.75 inches (34.93 cm)
Depth: 9.48 inches (24.07 cm)
Weight: 4.02 pounds (1.83 kg)3Operating SystemmacOS High Sierra