Myotis, the mouse-eared bats are a diverse and widespread genus of bats within the family Vespertilionidae. Ears are normally longer than they are wide, with a long and lance-shaped tragus, and thence the English and zoological names (in Greek, myotis and myosotis mean “mouse-ear”).

The species within this genus vary in size from very large to very small, with a single pair of mammary glands.

The company name myotis was chosen as it refers to both, ultrasound as the main orientation means of the bats, and electronics through the greek prefix mu commonly used as a prefix of physical units indicating one-millionth.