The Advanced Sound Technologies 'Lectrofan Micro2 is a compact, portable white noise machine designed for home and travel use.  It measures approximately 2" by 2" and is designed to fit in the palm of a hand or easily in luggage.  The device features 5 fan sounds, 4 white noise variations (including brown and pink noise), and 2 ocean surf sounds.  It also doubles as a Bluetooth speaker to stream music or podcasts from a phone, and includes a built-in microphone for hands-free calls, as well as a USB-C charging port (with cord).