This is an software defined radio receiver with RTL2832U ADC chip, R820T2 tuner, 1PPM TCXO, SMA F connector and aluminium case with passive cooling. Tunes from 100 kHz to 1.7 GHz. (HF works in direct sampling mode with reduced performance). Can be used with free software like SDR, HDSDR, SDR-Radio, GQRX or SDR Touch on Android. Works on Windows, OSX, Linux, Android and computers like the Raspberry Pi. Great for beginners as it allows for terrestrial and satellite reception. Easy to mount outdoors and designed for portable and temporary outside usage. Please do not use outside during poor weather conditions. Not suitable for HF reception. The factory batch may affect the appearance of the label, but does not affect the use Colour:As Shown Material:metal+plastic Package Contents: 1 x SMA Dongle 1 x Antenna 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.