NOTE: It is a NEW powerful barcode scanner with multi functions and operation steps. Some buyers don"t know how to use it exactly, so left a not good review. PLEASE CONTACT SELLER "Kastonecorp" FOR WHOLE DETAILED ENGLISH PDF USER MANUAL !!! UPGRADED AND STRENGTHEN: 1.Offline storage capacity 2600.(Old one is 1000) 2.Data interface is square USB, easy to plug and play and more stable.(The old one is RJ45) 3.Support keyboard input English/German/French/Spanish/Italian/Japanese. 4.Enhance the support for apple"s IOS version, support IOS barcode reading and perfectly switch of virtual keyboard input method. 5.Support the addition of various virtual keyboard characters. 6.Bluetooth entity keys and virtual keyboard co-exist at the same time under andriod 4.1,easy to switch. 7.Perfectly support bluetooth 2.0/3.0/4.0 without any external bluetooth adapter. 8.32 Bit high speed RAM and DSP 9.Long service life design and can withstand 1.5m air drop. CHARACTERISTICS: Multiple Interface: USB, RS232, PS2 Keyboard Light Source: Laser LED 650+/-20nm Sensor: 2500 pixels Nominal Working Distance: 6-30cm Decode Rate: 200pcs/s Scan width: 30mm Scan mode: Auto off/Manual mode Cylinder Horizontal Scan: Diameter 35mm Radio Range: 10m Visual range Package: 1 x Barcode Scanner 1 x Bluetooth USB Receiver for PC 1 x USB Power Plug 1 x Cable 1 x Adapter