Assemble this high quality ultrasonic detector and hear sounds normally beyond human ears! Listen to the sound of bats as well as other things that emit ultrasound. You’ll be surprised to discover the number of usually inaudible sounds that surround us every day! This is an easy-build kit – all components just clip or screw together. Complete with clear, step-by-step instructions and cardboard case. Assemble your own high quality ultrasonic detector! Give your ears superpowers and listen to amazing new sounds! Clear, step-by-step instruction booklet Easy-build kit – simple push-fit connectors and screw-together parts Requires 1 x 9V battery (not included) This is not a toy. Not suitable for children under 14 years.
