SainSmart DSO Note II DS202 Nano ARM Portable Mini Handheld Touch Screen Digital Storage Oscilloscope, 8MB Memory Storage 2MHz 10Mps Color Display: The bright color display presents any measured AC current, including sine, square, sawtooth, and triangle waveforms. Simple to Use: Operation is simple and easy, using taps and swipes much like any smartphone. Portable: Its small form factor conveniently fits inside any pocket so its always ready when you need it. Easy Saving: The built-in 8 MB flash storage makes saving and transferring waveform images easier than ever.