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 620 Notebook PC, Intel® Core™2 Duo, 2.1 GHz, 39.6 cm (15.6"), 1366 x 768 pixels, 3 GB, 320 GB HP 620 Notebook PC. Processor family: Intel® Core™2 Duo, Processor model: T6570, Processor frequency: 2.1 GHz. Display diagonal: 39.6 cm (15.6"), Display resolution: 1366 x 768 pixels. Internal memory: 3 GB, Internal memory type: DDR3-SDRAM. Total storage capacity: 320 GB. Discrete graphics card model: Intel® GMA 4500MHD. Operating system installed: Windows 7 Professional. Product colour: Black. Weight: 2.49 kg https://www.techradar.com/reviews/pc-mac/laptops-portable-pcs/laptops-and-netbooks/hp-620-901560/review While HP's EliteBook, ProBook and Compaq laptops are its flagship business models, it also offers more affordable corporate machines, such as the 620. Built for basic office use, it has a lot to offer, but is let down here by a significant design flaw.... Decent performance, Hard drive, Connectivity Weak graphics performance, Keyboard design