Descriptions:1.2.4 inch TFT resolution 320×240, the display is more clear. USB charging, more convenient to use.@$Specifications:Operating frequency: 140MHz ~ 2700MHzFrequency stepping: 1kHzDisplay: 2.4 inch TFT resolution 320×240 (QVGA)Battery capacity: 2000mAH (7.4Wh)Power consumption: <1.5WCharging current: 400mACharging interface: USB (temporarily only as a charging interface, data transmission is temporarily not open)Auto power off: can be set (always on, 5 minutes to 60 minutes optional)Measurement parameters: resistance, reactance, standing wave, s11Resolution: 4 significant digitsFrequency accuracy: <±3ppmConnector: SMA-KImpedance: 0.1Ω~1000Ω (impedance absolute value)Standing wave: 1.000~65Measuring range s11 (dB): 0dB ~ -60dBImpedance: <impedance absolute value × 3% ± 0.1 Ω (Z less than 200 Ω, < 1.5 GHz)Standing wave: <effective reading × 10% ± 0.10.1 dB /5 ° (0dB ~ -10dB) 1 dB /10 ° (-10dB ~ -20dB)Error (single point measurement): s11 (dB / °) 5dB / 20 ° (-20dB ~ -40dB)Directionality: <35dB (after 140MHz to 2GHz calibration), <30dB (2GHz to 2.7GHz)Scanning points: 280Output level: -18dBmWorking temperature: 0 ° C ~ 40 ° CAtmospheric pressure: 860hPa ~ 1060hPaColour: BlackPackage Included:1 x antenna analysis measuring instrument1 x data lineNotes:Please allow 0-2mm error due to manual measurement, thanks for understanding.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Please understand, thank you!