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 6730s + L1908w, Intel® Core™2 Duo, 2.1 GHz, 39.1 cm (15.4"), 1280 x 800 pixels, 2 GB, 250 GB HP 6730s + L1908w. Processor family: Intel® Core™2 Duo, Processor model: T6570, Processor frequency: 2.1 GHz. Display diagonal: 39.1 cm (15.4"), Display resolution: 1280 x 800 pixels. Internal memory: 2 GB, Internal memory type: DDR2-SDRAM. Total storage capacity: 250 GB. Operating system installed: Windows Vista Business. Weight: 2.5 kg