1,Built-in high-capacity lithium- battery for mobile and outdoor use. 2,Shutdown automatically saves the setting parameters without manual intervention. After the power-on, the interface are exactly the same as the shutdown, and the use is worry-free. 3,Can be used to test the antenna, the impedance of the radio frequency devices. 4,The instrument has four interfaces: single point measurement, function, system information and calibration. The default power-on interface is single point measurement. 5. Aluminum alloy shell, extending service life. Specifications: Model: N1201SA+(PS200) Frequency: 34.375 mhz - 2.7 - ghz Interval: 1 khz Display: 2.4 inch TFT pixel 320x240 (QVGA) Rated capacity: 2000mAH (7.4Wh) Power consumption: 1.5W Charging current: 400mA Charging interface: USB ( charging) Automatic shutdown: adjustable (always on; 5~60 minutes) Measurement fact: resistance/reactance/SWR/s11 Resolution: 4 significant digits Frequency accuracy: 5ppm Connector: SMA-K Measuring range: Impedance: 0.1 ~1000 (absolute value of impedance); SWR: 1.000 ~ 65; S11 (dB): 0dB to - 60dB Error (single point measurement): Impedance: Less than Impedance absolute value 3% 0.1 (Z Less than 200 , Less than 1.5GHz) SWR: Less than effective reading x10% 0.1 s11 (dB/):0.1 dB/ 5(0dB to -10dB); 1 dB/10 (- 10dB to - 20dB); 5dB/20 (- 20dB to - 40dB) Directivity: Less than 35dB (35MHz~2GHz after calibration)& ; 30 db (2 ghz ~ 2.7 ghz) point: 280 Output level: - 18dbm Operating temperature: 0 ~40 Atmospheric pressure: 860hPa~1060hPa Dimensions: 98 x 86 x 30mm Material: Metal colour: black Package Contents: 1 x antenna analyzer 1 x USBcable 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 a little different from the real thing. The measurement allowed error is +/- 1-3cm.