Please check it carefully and select the suitable models when you place orders. Thanks. Auto Scan Mode / Manual Scan Mode can be changed for S/H ScannerOur scanner can be set by Automatic scanning mode and Manual Handheld scan mode by scan below codes Warmly Reminder This scanner can scan common 1D or 2D codes if the codes on curved bottle or complex codes it might can't read. If your codes are not common please contact me to it before place orders. Thanks for your support. Type:Barcode Scanner Scan Element Type:CMOS Origin:CN(Origin) Optical Resolution:600*1200 Scan Breadth:A4+ Scan Speed:200 scans/second Interface Type:USB Product Type:Bar Code Scanner Certification:CE Certification:FCC Certification:RoHS Colour Depth:32 Bit Model Number:H4B H3 H4 Novelty:New Scanning Light Source:Natural Light+LED Time to market:Mar-13 Depth of Scan Field:10-800 mm Decode mode:by trigger or continuous mode Decode Error Rate:less than 1/ 8 million Supported Symbologies:All Common 2D/1D codes Precision:5 mil (0.10mm) Battery capacity:2000mAh Decode error rate:Less than 1/8 million Wireless Barcode scanner:2D Wired bar code reader Bluetooth Barcode Reader:USB Barcode Scanner