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 The Celeron® processors support a wide range of multimedia capabilities to entertain and entice all throughout your day. Create, edit, and manage important files on the go. Easily organize contact lists and messages. Experience improved features and functionality to help you be more productive at work. The Celeron® processor levels up the fun with improved graphics, smooth action, and healthy battery life to support enhanced casual gameplay. Intel Celeron HDMI 1 HP ProBook 4510s, Intel® Celeron®, 1,66 GHz, 39,6 cm (15.6"), 2 GB, 250 GB, Windows Vista Home Premium HP ProBook 4510s. Processor family: Intel® Celeron®, Processor frequency: 1,66 GHz. Display diagonal: 39,6 cm (15.6"). Internal memory: 2 GB, Internal memory type: DDR2-SDRAM. Total storage capacity: 250 GB. Discrete graphics card model: AMD Mobilty Radeon HD 4330. Operating system installed: Windows Vista Home Premium. Weight: 2,59 kg https://www.expertreviews.co.uk/laptops/48942/hp-probook-4510s-review Thanks to its glossy, piano-black lid and square edges, the ProBook 4510s looks both smart and businesslike. HP has also opted to preinstall Vista Business, which means you can upgrade to Windows 7 Professional, the middle version of Microsoft's new... http://www.itpro.co.uk/611950/hp-probook-4510s Decent looks and lots of power are let down only by the low-res screen, but this is still well worth a look. ... https://www.expertreviews.co.uk/laptops/48942/hp-probook-4510s-review HPs 4510s is the only laptop with Vista Business in this category, but thats no reason to avoid it if youre choosing a laptop for home use. The ProBook came second in this groups 2D benchmark results and, thanks to a Radeon HD 4330 graphics chip...