Hamilton Buhl Flex-Phones™, Black Foam Headphones orientation-vertical along with a comprehensive instruction

along with a comprehensive instruction guide

Everyone can see the rows of “sound meter” lights rise and fall

Topics include: speed

Just plug it into any USB power source with the included cable and enjoy a dazzling array of colors created by powerful LED lights

use it to teach about the parts of the body

Hamilton Buhl Flex-Phones™, Black Foam Headphones orientation-vertical along with a comprehensive instructionHamiltonBuhl Flex Phones are nearly indestructible, made from a single piece of EVA foam. EVA foam is safe, non toxic, BPA free, soft and an extremely flexible material. Flex Phones are certified for all major USA and international child safety testing standards. We are extremely proud that they have been awarded the Scholastic Teacher's Pick as "The Best of 2015". Recommended for children ages 3 and up, Flex Phones deliver high quality sound that