This TOOLTOP professional oscilloscope has 320 * 240 LCD screen, so you can see the data more clearly, the backlight id adjustable, you can change it in different occasion, it also has 4 speeds of square wa-ve signal output function, and in small size, so you can take it to anywhere you want to use it. Come on and try it. Features: With 320 * 240 LCD screen, so you can see the data more clearly. With 120MHz ana-log bandwidth and 500MS/s sampling rate. With the function of 4 speeds of square wa-ve signal output: 1kHz,10KHz,100KHz,1MHz. 12 kinds of parameter measurement: Vpp, Vrms, Vavg, Vp, Vmax, Vmin,F,T,T+,T-. Du+, Du-. Functions: one ke-y oscilloscope, three scan modes: auto, normal and single, 12 kinds of test data, can store 2500 waveforms, support thumbnail browsing. Waveform parameters such as time base, amplitude and trigger slope can be set by themselves. Silicone protective cover on both sides of the fuselage, anti-slip, anti-fall and shockproof, comfortable to feel. Small size and light, so you can take it to anywhere you want to use it. Specifications: Material: ABS Screen: 320 * 240 LCD screen Impedance: *1: 1M Ohm *10: 10M Ohm Storage: 2500 DSO waveforms Use condition: 0C~ +40 celsius , less than 75%RH Storoge condition: -10C~ +60 celsius , less than 90%RH Vertical resolution: 8 bits Vertical accuracy: +/-(5%+ 0.2div) Voltage accuracy:10% Frequency accuracy:1% Trigger level: +/-3.8div (0. 1div per step) Trigger position: +/- 6div (0. 1div per step) Time base range: 6ns/div ~ 50s/div Scan mode: auto, single, normal Battery: 1 *18650 lithium battery (included) Record length: 12div Package size: 190 * 140 * 45mm / 7.5 * 5.5 * 1.8in Package weight: 390g / 13.8ounce Packing list: 1 * Oscilloscope 1 * Probe 1 * User Manual 1 * USB Cable