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 HP Pavilion tx1020ea, 1.6 GHz, 30.7 cm (12.1"), 1280 x 800 pixels, 1 GB, 120 GB, Windows Vista Home Premium HP Pavilion tx1020ea. Processor model: TL-50, Processor frequency: 1.6 GHz. Display diagonal: 30.7 cm (12.1"), Display resolution: 1280 x 800 pixels. Internal memory: 1 GB, Internal memory type: DDR-SDRAM. Total storage capacity: 120 GB, Optical drive type: DVD-RW. Discrete graphics card model: NVIDIA GeForce Go 6150. Operating system installed: Windows Vista Home Premium. Weight: 1.92 kg