In the same environment, there are lots of wifi signals, the same frequency point has more than one signal occupancy, affecting each other, it will cause your own wifi signal quality is very poor, use this assistant, you can easily check which frequency point has more signal, that frequency point is more free, you can adjust your own wifi, switch the frequency point to more empty frequency point, improve the communication quality of your own used wifi. Color: As Shown Material: ABS Package Contents: 1 x WIFI Signal Analyzer 1 x Type-C Charging Cable 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. [Battery Power Display]: With battery power display function, the battery power is displayed in the upper right corner of the screen. [Long Endurance]: Built-in 600mAh lithium battery, working current 160mA, standby time is about 4 hours. Features: [TFT Color Display]: 2.4inch TFT color display, supports displaying the wifi signal of all frequencies in the 2.4G band, and the number of wifi occupied by the same frequency point. And it will automatic refresh. [Charging Indicator]: 5V charging voltage, when charging, red light means the analyzer is on charging; green light means fully . [Charging Management]: Use TYPE-C port for charging, built-in Li-ion charging management circuit. Charging time is about 2 hours.