Body length: 7-8 cm
Body weight: 25–40 g
Wingspan: 35–44 cm
Colour: brown in the case of adults, brown-gray in the case of young ones, their belly is whitish. The skin of the ears, nose and wings is brown.
Life expectancy: In the wild, the greater mouse-eared bat can even reach 37 years of age, although the average life expectancy is estimated to be about 6-7 years.