GS M500BT 2D Bluetooth companion scanner is mini size and powerful new generation barcode scanner. It can be combined with smartphone to be a professional data collection terminal. It features advanced CMOS imager scan engines which can rapidly decode 1D and 2D barcode into your smartphone via Bluetooth, such as iPhone, iPad, and all kinds of android smartphone. With GS M500BT Bluetooth companion scanner, you do not need to buy the expensive and heavy PDA anymore! It has dual field optics, both high density and wide field in the same unit.