3.2 inch color resistive touch screen Wide frequency range: 35 MHz to 6200 MHz, fast scanning frequency range: about 500 s/point High measurement accuracy: 70-75 dB within 2 dB dynamic range Compatible with most Android devices and computers, one device can be used with the help of multiple smartphones/tablets/PCs Wireless data transfer to smartphones/tablets/PCs. The device can be powered by smartphone/tablet/PC, free multi-function software and free updates for device control Display frequency range: 35MHZ-6200MHz Measurement frequency range: 35MHz-4500MHz Dynamic range in the 35-3000 MHz band: 75 dB Dynamic range in the 3000-4500 MHz band: 70 dB Maximum span: 6165 MHz Bandwidth: 200 kHz, fixed Sweep speed of visible band above 100 MHz: 700 MHz/sec Sweep 100 MHz: Less than 0.25 sec Noise floor: Less than -90 dBm (up to 3000 MHz) Noise floor: Less than -85 dBm (3000-4500 MHz) Noise floor: Less than -80 dBm (4500-6200 MHz) Wave impedance: 50 ohms Standing wave ratio in the operating frequency range: Less than 1.5 Internal attenuator: 0-30 dB Error when attenuation is up to 10 dB: 2 dB Error from 10 to 20 dB attenuation: 5 dB Error from 20 to 30 dB attenuation: 8 dB Accuracy over dynamic range: 2.0 dB Maximum input power at 0 dB attenuator: 10 dBm Maximum input power above 20 dB attenuation: +20 dBm Maximum input measurement signal: +10 dBm Maximum input DC voltage: 25 V Maximum current consumption when operating on battery: 350 mA Maximum current consumption when operating on USB: 500 mA (while charging) Battery: 2000 mAh Battery life: 4 hours Battery charging time: about 5 hours Colour:Black Material:aluminum alloy Package Contents: 1 * Spectrum 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.