Function: Oscilloscope+Multimeter+Waveform Generator; 70 MHz Handheld Digital Oscilloscope with 2 channels -- Sample Rate Range 250MSa/s(Single-channel), 125MSa/s(Dual-channel) Simplify operation, convenient to use: 250M Sampling rate, 70MHZ Bandwidth. 10MV-10V Vertical resolution; Auto automatic measuring function; Key tone settings, Adjustable backlight brightness, Backlight, duration and auto power off time. Digital voltmeter function, Cursor measurement, reference waveform,waveform Storage function Multifunction Digital Multimeter Function, High sensitivity and accuracy, showing clear, stronganti-overload capability, easy to carry. Digital multimeter which can be used to measure AC/DC voltage/current, resistance, diode,capacitance, on-off test Handheld digital oscilloscope with waveform generation operation is simple and easy to use for hobbyists and electronics enthusiasts for automotive, home appliances and other electronic products for learning, diagnosis and repair; small and lightweight for electricians outdoor field work, such as circuit repair, light bulb testing, mechanical testing, mobile phone and computer repairs; can also be used for educators and students for education laboratory courses