Features: With 3.2 inch LCD screen, so you can see the data more clearly, give you a better using experience. When the current is down, the current is less than 50uA, with low current characteristic. With built-in battery, you don'for t have to worry about the sudden loss of power. The PortaPack firmware runs on the quick ARM processors in your . No need for a computer unless for firmware reprogramming. With the fine material and aluminum housing, it has a long service life, you don'for t need to change it often. You can easily listen to standard NFM and WFM audio signals by connecting speakers to the Portapack's 3.5mm audio jack. It makes it very easy to capture and re-play wireless signals, such as those from the ISM band remote. You simply go to the "capture" menu, set the frequency of the remote control ke-y, press the red "R" record button, and press the ke-Y on the remote control to make a capture. Specifications: Material: Metal + Plastic Audio jack: 3.5mm Current: <50uA Battery: 1 * lithium battery, 1500mAh (included) Package size: 10.2x8.5x4cm/4.02x3.35x1.57in Package Includes: 1Set x SDRTransceiver note: No retail package. Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!