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 Does not contain "conflict minerals": tantalum, tin, tungsten, and gold. 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 DisplayPort 1 Numeric keyboard Y Hard Drive HDD HP ProBook 640 G1, Intel® Celeron®, 2 GHz, 35,6 cm (14"), 1366 x 768 pixels, 4 GB, 500 GB HP ProBook 640 G1. Product type: Laptop, Form factor: Clamshell. Processor family: Intel® Celeron®, Processor model: 2950M, Processor frequency: 2 GHz. Display diagonal: 35,6 cm (14"), Display resolution: 1366 x 768 pixels. Internal memory: 4 GB, Internal memory type: DDR3L-RS-SDRAM. Total storage capacity: 500 GB, Storage media: HDD. On-board graphics card model: Intel® HD Graphics. Mobile network generation: 3G. Operating system installed: Windows 7 Professional. Product colour: Black, Silver