Features: 4.3-inch LCD screen, resolution 800x480, wide viewing angled, long use does not hurt the eyes. All-aluminum alloy casing is effectively shielding electromagnetic and ensuring measurement accuracy. 5000mAh high capacity battery, the battery life can reach 7 hour. Full touchable screen design, with three side buttons at the same time, flexible and convenient operational. USB power output is designed to support 5V/1A power output. Specifications: Component:Aluminium Size:Approx.14x7.3cm/5.51x2.87inch Frequency: 50kHz-3GHz output power: -9dBm (error within 1GHz: ±1dB) Frequency accuracy: <0.5ppm S21 dynamic: 70dB (1.5GHz), 60dB (3GHz) 2-port return loss: 20dB typ (1.5GHz), 13dB min (3GHz) Number of calibration points: 101 points Number of scanning points: 101 points Number of traces: 4 Package Includes: 1 Set Vector networking analyzing note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual of the item.