About this item Safe Volume & Stereo Sound: These headphones meet strict market regulations and have built-in volume limiting technology (85dB) to protect children's sensitive hearing. The headphones have a built-in 40mm speaker unit for rich bass and realistic sound. Ultra-durable & 90° Rotatable: These wireless headphones feature a reinforced headband hinge that can withstand school bags, playgrounds, and bumpy environments. They are foldable and 90° rotatable, convenient for carrying and storage. Lightweight & Comfy Fit: These toddler headphones feature soft memory foam ear cushions and a lightweight frame (only 6.35 ounces). The adjustable headband fits almost any head shape, ensuring all-day comfort for children studying or on long flights. Bluetooth 5.4 & Built-In Mic: Enjoy high-quality audio with Bluetooth 5.4 for stable, cord-free streaming from your smartphone or tablet. The built-in microphone gives hands-free freedom for studying, homework, being in class or playtime. 75H P