Basic parameter information: Display: 2.8 inch, 320x240, resistance touch Low input port (high performance): 100kHz - 350MHz High input port (limited performance): 240MHz - 960MHz Resolution filter: from 3kHz to 600kHz Color: Black material: metal Low output port (sine wave): 350MHz Low output port power: - 76dBm to - 7dBm High output port (square wave): 240MHz - 960MHz High output port power: - 32dBm to 16dBm Displayed scan points: max 290 0-350MHz fastest scanning time: 405ms Minimum zero sweep time: 1.8ms Low input port display average noise level: - 146dBm/Hz( -111dBm 3kHz ) Average noise level displayed on high input port: - 163dBm/Hz( -128dBm 3kHz ) Phase noise (10kHz offset): - 83dBc/Hz Phase noise (100kHz offset): - 98dBc/Hz Low input port 1dB compression point: - 2dBm High input port 1dB compression point: - 6dBm Third order intermodulation cut-off point of low input port:and24dBm Frequency error:Less than 2ppm Frequency stability:Less than 1ppm Communication interface: USB type-C (communication mode: CDC serial) Power supply: USB 5V 150mA, Built in 650mAh battery, maximum charging current 300mA Overall dimensions: 58.7 x 91.3 x 17.1mm (excluding protrusions) Different production batches, the appearance may be different, does not affect the use Package Contents: 1 x Handheld spectrum analyzer 1 x Antenna 1 x Adapter 1 x USB cable 2 x RF cable 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.