Features: It is a 200W digital power standing wave meter and HF shortwave power meter.Upgraded hardware, 200w measurement range and 1.29-inch large OLED display screen. Improved firmware, new fitting algorithm and multi-point correction algorithm. Its display modes include normal mode and peak hold mode. Multi-interface display mode all adds dynamic analog display bar, and the power status is more intuitive under SSB. Fitting algorithm (according to the characteristics of detection diode) + multi-point correction algorithm + dual reference segment detection make the accuracy better than 5% over the entire power range of 0.5W to 200W.There are 5 interface display methods. High-speed average detection mode and real-time efficiency display.When standing wave 2.0, it will enable intermittent beep alarm. When standing wave 3.0, it will trigger continuous beep alarm. With built-in lithium battery, it can be used for more than 50 hours on a single charge.Multi-function button makes use more fun and adds one more way to interact for functions in the future. Specifications: Frequency range: 1.6-50MHz Power measurement range: 0.5W-200W Standing wave measurement range: 1.0-99.9 Insertion loss: Less than 0.12dB Insertion of standing waves: 1.02 at 1.6-30MHz; 1.05 at 30-50MHz Measurement accuracy: better than 5% Impedance: 50 Standing wave alarm: when standing wave 2.0, it will enable intermittent beep alarm. When standing wave 3.0, it will trigger continuous beep alarm. The alarm can be turned off RF interface type: so239 Display content: forward power, standing wave, antenna-end power and efficiency Power supply: built-in rechargeable lithium battery or USB type-c Power consumption: Less than 0.1uA Screen size: 1.29 inches Screen type: OLED Data communication: USB type-c Firmware upgrade: Support Attention: The above parameters aremeasured b