3.2 inches, 240 x 320 RGB LCD with resistive . Four-way buttons, rotary wheel and select button. Coin battery to preserve settings and date / time. Micro-SD card slot for data and storage code SSB, AM, narrowband FM, broadband FM audio reception, with cascade spectrum. Broadband (18MHz) spectrum and cascade analysis. Monitoring of boat (), automobile (TPMS), E utility counter transponder (ITRON ). for mode runs for firmware for use with the SDR host computer software. Calibration PPM for more accurate tuning. Sleep mode saves energy by turning off the display only. Your for will continue to work with the computer-based SDR software when you put the for PortaPack in " mode". PortaPack is only compatible with the for . It is not compatible with the first for design. If you have an RF shield installed on your for , the PortaPack should be fine. Compatibility with the for Blu is experimental. A proprietary Blu reported good results with less interference between the audio capacitors PortaPack and the mechanical header band. If your for Blue doesn't have a header band installed, you should have no mechanical problems. PortaPack requires an external battery. Any USB-connected battery should work, although they vary widely in quality and poorly designed batteries can inject noise voltage regulator into the radio. for PortaPack and of Un will not replace your handheld ham radio receiver. Reception sensitivity varies from band to band, but will not perform as well as a real ham radio receive Colour:As Shown Material:metal+plastic Package Contents: 1 x for PortaPack H3 MINI Kit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.