Tin whistle
In recent years a number of instrument builders have started lines of "high-end," hand-made whistles, which can cost hundreds of dollars US each — expensive in comparison to cheap whistles, but nevertheless cheaper than most other instruments. These companies are typically either a single individual or a very small group of craftsmen who work closely together. The instruments are distinguished from the inexpensive whistles in that each whistle is individually manufactured and "voiced" by a skilled person rather than made in a factory.
Whistle (company)
Whistle began experimenting with the SigFox internet of things network for its devices in May 2014. In January 2015, the company acquired Tagg, a competing startup based in San Diego, for an undisclosed sum for its battery life and location-tracking intellectual property, and Tagg's CEO, Scott Neuberger, joined Whistle. Tagg had started as a Qualcomm subsidiary in 2010 and released its tracking device one year before Whistle. By 2015, Whistle had distributed 100,000 devices and had about 40 employees.