DescriptionIf you are looking for funny gift for your children? This DIY sound transmission material is good choice for you. It is very useful in exerting children's imagination and creativity and is good partner of school teaching, excellent and useful DIY assembly material tool.Features- Color: Mainly blue.- Material: Plastic.- Size: 5.00X4.50X3.50cm/1.97X1.77X1.38inch.-Sound transmission teaching with self-made microphone prop, so that children are interested in how to conduct sound.- Hand-made classroom fun making and DIY assembly, which can make children concentrate.- Easy to use, cultivate students' hands-on ability and stimulate students' interest in learning.- Made by high-quality material, safe and durable, which could be used for very long time.- Your children will have good use experience because of the perfect workmanship of this product.