An oscillicsope and a function generator. The instrument seems solid and the interface is easy enough to navigate. I have a larger multi channel scope but this small portable one is great if i don't want to move that just to get a measurement (plus, the fact it's battery powered means it would be an isolated measurement). For the price point, the fact it also has a function generator is a nice bonus, even if it only goes to 50 kHz. All in all, a neat little tool.

Incredible little scope for the cost. Keep at the foremost of your mind, however, it is built to that price point!It has sparse memory depth which makes it exceedingly important to be accurate with on-center wave capture.Seriously, though, I have no complains given the price. If one has never used an oscilloscope, this would be perfect for the start of the journey.

Slick little product. It gets a job done. Not all the jobs maybe, but a job, certainly. The frequency generator is a nice have, and the fact that it will run independent of the scope side is great, and makes it a truly useful piece of test equipment to have. I don't know what the actual adapter is for the cable, but it would be nice to have something a bit nicer than common alligator test clips for signal injection, though, you can always clip it to a dupont cable if needed.Also, the value for cost is absurd. worth double.

I used this to tune audio systems in cars since bringing a full size oscilloscope that needs wall power mobile to a vehicle is impractical. Works exactly as expected very easy to use. And accurate enough for audio. Get what you pay for though so don’t expect this to fit your needs when doing things like small electronics. Great value for the money. Also very small which is great for portability but a little hard to read things on the screen if eyesight isn’t the best.

Item did not work. And the calibration didn't work either. It was reading random numbers when nothing was even plugged into it.

I bough this to test an automotive module, but found it only read millivolts. The screen is smaller in person than in the images.

Easy to use and I like how it works especially for the price, but switch the 1x and 10x attenuator on the probe doesn't do anything to the input signal. Seems to be broken.

Before purchasing, think carefully about exactly what your applications for this device would be. What can you do under 10MHz? Certainly not fix a motherboard or analyze modern wired or wireless communication signals. The main use cases I can think of are debugging switching power supplies, audio circuitry, and maybe some automotive applications. Aside from practical uses, this is a terrific educational device for an aspiring electrical engineer or tech.Good:- light weight, extremely portable; smaller and lighter than a cell phone- Complete kit with a 1x/10x probe, cables, connectors, lanyard- Can take screenshots and transfer to laptop to include in presentations or reports- Built-in signal generator that can operate simultaneously with scope- 400Vp-p input range- $44 street priceThe not-so-good:- The 48MHz sample rate limits its usefulness to all but the lowest bandwidth signals.- Limited visual resolution, 320x200 can look pixelated, and the screenshots are accordingly tiny.- Gross errors in some of its measurements, e.g. a 60HZ waveform reading at 80Hz.- Single-channel and no trigger input for the DSO, so can't synchronize a data input to a clock signal.- Waveform generator running on an 8-bit DAC, so output is clearly stair-cased.- Waveform generator seems to be limited to 1kHZ; although you can set it up to 50kHz, it operates only up to 1kHz from what I can see.What's in the box:Scope, probe with BNC end, BNC to Male MCX adapter, alligator clip lead with male MCX end, USB data/power cable, lanyard and instruction manual.Conclusion:As an educational tool, it's a reasonable facsimile of it's larger brethren and can teach all the basics of capturing and inspecting a signal. However, as an analysis tool, I would be inclined to spend 2-3 times more and get a dual-channel device with higher signal quality and sampling rate.DSO Specs:- Vertical scale between 10mv and 10V (or 100mv and 100V in 10x mode)- Horizontal scale between 50ns and 20s, with optional persistence- Adjustment for baseline and trigger level, as well as adjusting the x-axis position of trigger- Triggering can be set to normal (display only when triggered), auto(sweep even when not triggering) or single-sweepDDS Specs:- sine, square, sawtooth, half-sign, rectified-sine, 8-level step, reverse step, exponential rise, inverse exponential rise, DC, multi-audio, sync pulse and Lawrence- Sawtooth and square wave allow setting the duty cycle between 0% and 100%, inclusive- Operate over a frequency of 1Hz and 1kHz inclusive, and an amplitude between 0.1V and 3V.- There's no option to set a DC offset on the signalScreenshots:- 120VAC (60Hz)- 1kHz calibration square wave (prior to calibrating the probe)- random audio signal- DDS output of a sine wave revealing staircase and ripple- 120VAC through digital dimmer switch which has correct period, but the frequency is incorrectly measured 80Hz.