Main improvements of V3: SMA female antenna interface4.5V DC biasSupports high frequency direct sampling mode (500 kHz - 24 MHz direct sampling)Improvements relative to other RTL SDRs (R820T2, PCB optimization, etc.)Due to different batches, there may be differences in product appearance, color, and printed text, which will not affect the use.Product parameters: 1. Frequency range: 500KHz - 1766 MHz2. Sampling rate: maximum 3.2Msps (2.56Msps stable value)3. AD sampling digits: 8-bitsize: Receiver 7 x 2.8cmMaterial: Metalcolour: silverPackage Contents: 1 x Receiver Full KitOnly 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.