This amazing ultrasonic detector by Discovery Kids picks up ultrasounds that are normally inaudible to the human ear. Tune your detector into the hidden sounds that surround us such as combing hair, fluorescent lights, rattling keys tearing paper, rubbing fabric and of course bats. Requires a 9V battery (not included).
Features 20,000Hz to 100,000Hz frequency range, Frequency and volume controls, Lightweight hand-held unit, ON/OFF switch.
Recommended for children 8 years and older.