The Picoscope 6403 is a terrific PC-based oscilloscope, with four input channels, 350MHz bandwidth, 5GSa/s sampling rate (200ps on single-shot waveforms!), 1GSa memory, and a 10,000-waveform buffer. Not only that, it has a 12-bit 200MSa/s arbitrary waveform generator. There are tons of other features as well - spectrum analysis, excellent triggering, bus decoding, mask testing, and many more. It's completely programmable, but includes excellent oscilloscope software. The four 10:1 probes are fantastic: 500MHz bandwidth, with various tips and attachments. This item has the 6403 with power brick, four probes, probe stand, USB cable, original software CD, quickstart manual, and the case. I bought the unit new, and have babied it - everything is in mint condition. It has seen only light use. The screenshot is from a recent clean install on WIndows 10.