brand new and high quality Features: 4-inch full-view LCD screen, with added for DC dimming, can be seen more clearly when used outdoors. Indoor use is more comfortable. The bridge has been optimized to make full use of the harmonics of Si5351, and the 5th harmonic can now be used to measure up to 1.5GHz. When the fundamental wave is used, the CH0 output level is increased to 0dBm, and the reflection measurement is more accurate. The previous abnormality of Nanovna-H near 6MHz was resolved. Reproduce the design of the power management circuit, further reduces power supply noise, reduces USB power supply interference, reduces charging current, and protects the battery. Optimized PCB layout, accommodating 1950mAh battery, used for more than 8 hours. UART interface is reserved to facilitate DIY expansion. Lightweight ABS housing provides good for protection for the device. Specification: Measurement Frequency: 50KHz~1.5GHz RF Output: 0dbm (2dB, fundamental wave) Frequency Accuracy: