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 Intel® Pentium® Intel Pentium HDMI 1 HP ProBook 4520s, Intel® Pentium® 處理器, 2.13 GHz, 39.6 cm (15.6"), 1366 x 768 像素, 3 GB, 320 GB HP ProBook 4520s. 處理器系列: Intel® Pentium® 處理器, 處理器類型: P6200, 處理器頻率: 2.13 GHz. 顯示器尺寸(對角長): 39.6 cm (15.6"), 顯示器解析度: 1366 x 768 像素. 內部記憶體: 3 GB, 內部記憶體類型: DDR3-SDRAM. 總儲存空間: 320 GB, 光碟機: DVD Super Multi DL 雙層燒錄. 主機板內建顯示卡型號: Intel® HD Graphics, 獨立顯示卡型號: Intel® HD Graphics. 提供作業系統: Windows 7 Home Premium. 重量: 2.39 kg