Chelsea Online

Processor 2.2GHz quad-core Intel Core i7 processor Turbo Boost up to 3.4GHz with 6MB shared L3 cache Memory 16GB of 1600MHz DDR3L onboard memory Hard Drive 256GB PCIe-based flash storage Optical Drive None Software Operating System: OS X Yosemite Display Retina display: 15.4-inch (diagonal) LED-backlit display with IPS technology; 2880x1800 resolution at 220 pixels per inch with support for millions of colours Native resolution: 2880x1800 pixels (Retina) Scaled resolutions: 1920x1200, 1680x1050, 1280x800 and 1024x640 pixels Graphics Intel Iris Pro Graphics Dual display and video mirroring: simultaneously supports full native resolution on the built-in display and up to 3840x2160 pixels on up to two external displays, both at millions of colours. Thunderbolt digital video output Native Mini DisplayPort output DVI, VGA, dual-link DVI and HDMI output supported using Mini DisplayPort adapters (sold separately) Suoport for up to 5120x2880 resolution at 60Hz on a single external display (model with AMD Radeon R9 M370X only) Audio Stereo speakers Dual microphones Headphone port Support for Apple iPhone headset with remote and microphone Support for audio line out (digital/analog) Input Devices Full-size backlit keyboard with 78 (US) or 79 (ISO) keys, including 12 function keys and 4 arrow keys (inverted "T" arrangement) with ambient light sensor Force Touch trackpad for precise cursor control and pressure-sensing capabilities; enables force clicks, accelerators, pressure-sensitive drawing and Multi-Touch gestures Networking WIFI: 802.11ac Wi‑Fi wireless networking IEEE 802.11a/b/g/n compatible Bluetooth 4.0 wireless technology Power Supply Up to 9 hours wireless web Up to 9 hours iTunes film playback Up to 30 days standby time Built-in 99.5-watt-hour lithium-polymer battery 85W MagSafe 2 Power Adapter with cable management system; MagSafe 2 power port Line voltage: 100V to 240V AC Frequency: 50Hz to 60Hz Operating temperature: 10° to 35° C (50° to 95° F) Storage temperature: –25° to 45° C (–13° to 113° F) Relative humidity: 0% to 90% non-condensing Operating altitude: tested up to 3,000 metres (10,000 feet) Maximum storage altitude: 4,500 metres (15,000 feet) Maximum shipping altitude: 10,500 metres (35,000 feet) Dimensions Height: 1.8 cm Width: 35.89 cm Depth: 24.71 cm Weight: 2.04 kg Interfaces MagSafe 2 power port Two Thunderbolt 2 ports (up to 20 Gbps) Two USB 3 ports (up to 5 Gbps) HDMI port Headphone port SDXC card slot Apple Thunderbolt to FireWire Adapter (sold separately) Apple Thunderbolt to Gigabit Ethernet Adapter (sold separately) Warranty / miscellaneous 1 Year 720p FaceTime HD camera