Loto USB Oscilloscope OSC482M for Both Android Phone/Tablet & Windows PC, 2 Channels, 50M S/s, 20MHz (Bandwidth), 8~13 bit Vertical Resolution: Amazon.com: Industrial & Scientific
LabNation SmartScope: unique multi-platform USB oscilloscope | Elektor Magazine
Tablet Oscilloscope FNIRSI-1013D with 2 Channel 100MHz Bandwidth 1GSa/s Sampling Rate Oscilloscope Multifunction, Ultra Thin Portable USB Oscilloscope - Walmart.com