Bluetooth is a proprietary open wireless technology standard for exchanging data over short distances (using short-wavelength radio transmissions in the ISM band from 2400–2480 MHz) from fixed and mobile devices, creating personal area networks (PANs) with high levels of security. Y HDMI 1 HP HDX18-1080ED Premium, Intel® Core™2 Duo, 2.26 GHz, 46.7 cm (18.4"), 1920 x 1080 pixels, 4 GB, Windows Vista Home Premium HP HDX18-1080ED Premium. Processor family: Intel® Core™2 Duo, Processor model: P8400, Processor frequency: 2.26 GHz. Display diagonal: 46.7 cm (18.4"), Display resolution: 1920 x 1080 pixels. Internal memory: 4 GB, Internal memory type: DDR2-SDRAM. Discrete graphics card model: NVIDIA® GeForce® 9600M GT. Operating system installed: Windows Vista Home Premium. Weight: 4.06 kg