We are a company marketing Rugged Handheld RFID and Barcode Scanners.The AT570 is a rugged Handheld RFID Reader that also offers an integrated Barcode Scanner,WLAN (802.11g/b), Bluetooth and GSM/GPRS, Camera and GPS. The AT 570 is HF (Built-in or patch type) and UHF (866-868,902-928,910-915 and so forth) capable.Regarding catalog and upgraded SDK, you can download in our website http://www.korico.co.kr And let us introduce about our productOur product divided into two part of PDA and RFIDAnd PDA (basic spec)= PDA body+ W-LAN + 1D/2D SCANNER and optional part =Bluetooth, Camera, GSM/GPRS, GPS, CradleYou can choose for your need and specAnd in RFID part, there are two kinds of part- UHF(900MHz) and HF(13.56MHz) UHF reading distance=2~5M HF reading distance=1~10cmReading distance is difference a little according to TAG&＃39;s special[distinctive] quality And HF can compose by BUILT-IN TYPE and GUN TYPE 2 typeRFID frequency should be confirmed because policy differs in each country. we can supply and set suitable frequency by each countryBut, it is supplied in American version or Europe version in case of it is sample and small quantity.For reference, Europe area 866 ~ 868MHz, North America area 902 ~ 928 MHz , Korea 910 ~ 914MHz, Japan 952 ~ 956 MHz . Difference of our equipment is shares and made which usable PDA, RFID (HF, UHF) function.that is, while use by PDA function putting first, when need RFID function, because can use converting by RFID function just buying HF, UHF Module, there is effect that expense is reduced.We think that our HF and UHF reader also have price competitiveness compare with other deviceBecause of our quality and competitiveness, there are many interest and contacting to our product in North America, Europe area Thanks and best regardsJames janghttp://www.koric