Operating frequency:135MHz-2700MHz Frequency step:1kHz Display:2.4 inch TFT resolution:320x240 (QVGA) Battery capacity:2000mAH (7.4Wh) Power consumption:Less than 1.5W Charging current:400mA Charging interface:USB (temporarily only as a charging interface, data transmission is not open for the time being) Automatic shutdown can be set (always on, 5 minutes - 60 minutes selectable) Measurement parameters resistance, reactance, standing wave, s11 Resolution 4-bit valid value Frequency accuracy:Less than 3ppm Connector:SMA-K Impedance:0.1ohm-1000ohm(absolute value of impedance) Standing wave:1.000-65 Measurement range s11 (dB) 0dB--60dB Impedance Less than impedance absolute value x 3% 0.1ohm(Z less than 200ohm, Less than 1.5GHz) Standing wave Less than effective readingx10%0.10.1 dB /5 (0dB--10dB)1 dB /10 (-10dB--20dB) Error (single point measurement) s11 (dB/) 5 dB /20 (-20dB--40dB) Directionality Less than 35dB (140MHz-2GHz after calibration),Less than 30dB (2GHz-2.7GHz) Colour:Black Material:PC Package Contents: 1 * Antenna Analyzer kit 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 picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.