Specification datasheet: Model Name QS-PDA403 OS Android 6.0 CPU 4G Ver Quad-core 64bits 1.3Ghz RAM 2G RAM/16G ROM Extended Storage Micro SD card (Up to 64G) Display 4 Inch 480*800 Resolution Keyboards 29 Physical Waterproof Keyboards Printer Internal 58mm/2 inch Thermal printer INTEGRATED RADIO Network(3G/4G) CDMA/EVDO 800MHZ WCDMA(850/900/1900/2100MHz) GSM(850/900/1800/1900MHz) LTE-FDD: B1/B3/B7/B28 LTE-TDD : B38/B39/B40/B41 Wi-Fi IEEE 802.11 b/g/n Bluetooth Integrated Bluetooth 4.0 BLE GPS Built-in GPS and AGPS DATA CAPTURE 1D Barcode Scanner Symbol SE955 laser Scanner 2D Scanner CCD Image 2D Engine Camera AF 8.0M pixels with LED flash light Contactless 13.56MHz, ISO14443A/B, ISO15693, NFC IC card reader(Optional) ISO7816 Chip card reader Fingerprint(Optional) FPC1020 Capacitive fingerprint PHYSICAL CHARACTERISTICS Battery 7.4v 3400mAh Lithium Polymer Battery SIM Slot Dual SIM and Dual PSAM Interface Micro USB*1, Extended serial port*1,Charge DC port*1,Earphone port*1 Sensor Gravity sensor Size 220*85*59mm Color Black/Blue Weight 520g with Battery ENVIROMENT Operating Temperature -20 â~ 55 â Storage Temperature -40 â~ 70 â Humidity 5% ~ 95% Water & Dust proof rate IP65