Enables voltage-gated potassium channel activity. Acts upstream of or within inner ear morphogenesis; potassium ion transport; and sensory perception of sound. Predicted to be located in plasma membrane. Predicted to be part of voltage-gated potassium channel complex. Predicted to be integral component of membrane. Is expressed in heart; utricle; and utricle epithelium. Human ortholog(s) of this gene implicated in autosomal dominant nonsyndromic deafness 2A and sensorineural hearing loss. Orthologous to human KCNQ4 (potassium voltage-gated channel subfamily Q member 4). [provided by Alliance of Genome Resources, Apr 2022]