Enables mechanosensitive ion channel activity and voltage-gated calcium channel activity. Acts upstream of or within several processes, including calcium ion transmembrane transport; detection of mechanical stimulus involved in sensory perception of sound; and vestibular reflex. Located in stereocilium tip. Is expressed in inner ear. Orthologous to human TMC2 (transmembrane channel like 2). [provided by Alliance of Genome Resources, Apr 2022]