1. This Is The New V4 Unit And Not All Software Is Compatible With It! Compatibility With Most Programs On And Linux Is Okay For Now, But Macos And Android Are Still Catching Up.2. SMA Female Antenna Interface3. 4.5V DC Bias4. Support High-Frequency Direct Sampling Mode (500 KHZ - 24 MHZ Direct Sampling)5. Improvements Compared To Other Rtl Sdrs (R820T2, PCB Optimization, ETC.)Frequency Range: 500KHZ - 1766 MHZSampling Rate: Maximum 3.2MSPS (2.56MSPS Stable Value)AD Sampling Digits: 8-BitNote:Different Batches May Have Differences In Product Appearance, Color, And Printed Characters, Which Not Affect The UseColour:blackMaterial:ABSPackage Contents:1 x SDR Receiver1 x Antenna Group1 x Antenna Base1 x Retractable Antenna1 x Extension Cable1 x Retractable Tripod1 x Suction CupOnly 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.