SL-9000 this rugged handheld device features an outstanding high performance sensor. It contains no moving parts and is highly reliable. The unit operates on a 670nm laser. This tool will give you years of reliable and accurate usage. Specifications: Operational Light source 670nm laser Depth of scan field 10mm~450mm Resolution 0.1mm 4mil Scan speed 120 scans/ sec Print contrast ≥ 45% Decode capability All Unidimensional bar code Maintenance deadline one year Mechanical Length 95mm Width 75mm Depth 150mm Weigh 255.5 g System connector Keyboard mouth , String mouth RS232 ,, USB Keyboard connector IBM PC/XT/AT&compatible,PS2-30,PS-55