Grade B Refurbished: Device is in good condition. Will show slight signs of scratches, dents or scuffs. These blemishes will mostly be located on the bezel, rear, and possibly minor scratches on the screen. This device will be fully tested and fully functional.This item has been professionally restored to working order by an approved vendor. It has been inspected, cleaned to meet manufacturer specifications and is in very good condition. Wall charger is included General Features: Unibody aluminum design Intel Core 2 Duo P8700 2.53GHz dual-core processor 4GB PC3-8500 DDR2 SDRAM 500GB 5400RPM SATA hard drive Slot-loading SuperDrive DVDRW DL drive NVIDIA GeForce 9400M 256MB DDR3 Integrated audio with built-in stereo speakers Built-in omnidirectional microphone Built-in 10/100/1000 Gigabit Ethernet Built-in AirPort Extreme wireless LAN (802.11n) Built-in Bluetooth 2.1 + EDR (Enhanced Data Rate) module Built-in iSight camera Full-size keyboard with scrolling Trackpad 15.4-inch TFT widescreen LCD display (1400 x 900 resolution) I/O Ports: One (1) Mini-DisplayPort Three (2) USB 2.0 ports One (1) FireWire 800 port One (1) RJ-45 Ethernet jack One (1) Audio line-in jack One (1) Audio line-out jack Battery Specifications: 73 Wh Li-Poly Power Specifications: Input: 100-240V ~ 1.5A, 50-60Hz Output: 16.5 - 18.5V -- 4.6A Unit Dimensions: 0.95 x 14.35 x 9.82-inches (H x W x D) Weight: 5.5 lbs.