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 HP 6720s, Intel® Pentium®, 1,86 GHz, 39,1 cm (15.4"), 1280 x 800 পিক্সেল, 2 GB, 250 GB HP 6720s. প্রসেসরের ফ্যামিলি: Intel® Pentium®, প্রসেসরের মডেল: T2390, প্রসেসরের ফ্রিকোয়েন্সি: 1,86 GHz. ডিসপ্লের কর্ণ: 39,1 cm (15.4"), ডিসপ্লে রেজোলিউশন: 1280 x 800 পিক্সেল. ইন্টারনাল মেমরি: 2 GB, ইন্টারনাল মেমোরির প্রকার: DDR2-SDRAM. মোট স্টোরেজ ক্ষমতা: 250 GB. পৃথক গ্রাফিকস অ্যাডাপ্টারের মডেল: Intel® GMA X3100. অপারেটিং সিস্টেম ইনস্টলকৃত: Windows Vista Home Basic. ওজন: 2,6 kg http://asia.cnet.com/reviews/notebooks/0,39050489,42129273p,00.htm The good: Extremely affordable; good keyboard; reasonable performance. The bad: Short on connectors and expansion options; no clasp between lid and screen sections; oddly located touchpad. The bottom line: The HP Compaq 6720s is a budget business lapto... Extremely affordable; good keyboard; reasonable performance. Short on connectors and expansion options; no clasp between lid and screen sections; oddly located touchpad. The HP Compaq 6720s is a budget business laptop that could fit the bill if you dont need serious CPU or graphics power, and are likely to spend most of your time in the office rather than on the road.