Zynex, Inc. (NASDAQ:ZYXI) is one of the most exciting companies currently in the health technology sector. Its flagship product, NexWave, is a 3-functionality-in-1 device (which requires a prescription) and works through Interferential, TENS, and NMES. It is currently Zynex's flagship product, with 80% of revenues depending on it. Unlike competitors in the market that can be bought at Walmart (WMT) and cost a few tens of dollars, NexWave requires a prescription and has very high margins.