Model number: V-GPRS-300 Wireless modem GPRS USB:V-GPRS-300 contact:Cenny E-mail:cenny[at]veecom.com.cn MSN:cenny.xu[at]hotmail.com Detailed Product Description  V-GPRS-300 modem is easy for use, small and light, can be used in the desk computer and notebook computer. It has a standard interface USB 1.1, and it don't need outside power .No matter are you an administrator working at office or a business person traveling outdoor, V-GPRS-300 modem can help you grasp the newest tendency through the Internet.  PRODUCT FEATURES: High suitability: Can be used in the desk computer and notebook computer. Frequency range: GSM900MHZ and DCS1800MHZ / 1900MHZ Transmitting speed: Max speed: 115.2Kpbs (worked under the suitable network system). Common speed: 30-50Kpbs(under the China Mobile network)  Always on-line and high-speed connection. DualBand GSM / GPRS modem (EGSM900/1800MHZ)Designed for prs Network,Data fax SMS and voice application. Easily installation: Its round interface with vast function, which is needn't power input, has given the user limitless enjoyment of Internet. OPERATION: Can be widely applied in DOS,Windows9X,Win2000,NT4.0,Me,XP,Pocket PC,PALM,MAC,LINUX...... INTERFACES: USB 1.1  Audio use a stereo earphone connecter Supporting AT commands(GSM07.07 And 07.05) antenna interface 50 ohm MMCX connecter LED indecter SIM CARD : SMA Sliding SIM holder(3V/5V SIM interface) OTHER TECHNICAL SPECIFICATION: Channel space: 200KHZ Frequency stability: 0.1ppm Operating temperature: -20oC--60oC Storage temperature:-45oC--85oC Humidity: 90% GPRS class 10: GSM900 class 4 970mw GSM1800 class 1 770mw OPERATING POWER: 5mA DIMENSION: 80x40x13mm WEIGHT: 38g  I'm Cenny, a sales manager of Bell Data Communication Equipments Co., Ltd , a China local manufacturer . Our products brand is VeeCOM(LANBEL) .   Our major products series are:G.703/E1 to V.35 and ethernet Converters/DSL CPE/ADSL SYSTEM/Multiplexers/Bridges/Modems/Switch/E1&T1 equipment/Fiber Equipment/wireless modem/ADSL modem(The particular products are shown on our website: http://www.veecom.com.cn  or the website in alibaba: http://lanbell.en.alibaba.com/ ). contact:Cenny E-mail:cenny[at]veecom.com.cn MSN:cenny.xu[at]hotmail.com Company: Changzhou Bell Data Communication Equipments Co., Ltd  Website:www.veecom.com.cn Add: 15A Zhongnan Building, NO.33 Guanhe west road, Changzhou, Jiangsu, China  Tel: +86-519-86809961 86809962 86809963 86809965  Fax: +86-519-86809967 Postalcode: 213003 trademanager ID:cgs_cenny