Features: Four-way buttons, wheel and select button. Coin battery to preserve settings and date. Micro card slot for data and storage code AM, narrowband FM, broadband FM reception, with cascades spectrum. Broadband (18MHz) spectrum and cascades analysis. Monitoring of boats, automobile (TPMS), utility counter transponder modes runs firmware for use with the SDR host computer software.Sleep modes saves energy by turn off the display only. Specifications: Material:Aluminum Alloy 3.2" TFT 240x320 screen Navigation Microphone input 4-layer gold plate ROSH process (exported to Europe and US) Package Includes: 1set SDR Transceiver note: Please allow 1-2cm errors due to manual measurement,please make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.