Very late reply but that is most likely a tinySA, a compact and inexpensive spectrum analyzer that uses the same case as many nanoVNAs: https://www.tinysa.org/

Very late reply but that is most likely a tinySA, a compact and inexpensive spectrum analyzer that uses the same case as many nanoVNAs: https://www.tinysa.org/ https://www.tinysa.org/