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 When performance is your priority, rely on proven, trusted technology. With the cylindrical lithium-ion battery cell your laptop gets stable power that’s great for high-performance devices. Lithium-Ion (Li-Ion) Legacy Intel® Core™ Processor Intel Core i5-xxx Fingerprint Y Touch screen Y HP 2740p, Intel® Core™ i5, 2.66 GHz, 12.1", 1280 x 800 pixels, Windows 7 Professional HP 2740p. Processor family: Intel® Core™ i5, Processor model: i5-560M, Processor frequency: 2.66 GHz. Display diagonal: 12.1", Display resolution: 1280 x 800 pixels, Touchscreen. On-board graphics card model: Intel® HD Graphics. Operating system installed: Windows 7 Professional. Weight: 3.79 lbs (1.72 kg)