A 100% Harry Potter design! Kids safe! Volume limited to 85 dB to protect children's ears! With touch control mode: can answer calls with the microphone and control buttons (play/pause/next/previous). Very light and with their charging case, they fit easily into a bag. 3 to 4 hours of uninterrupted listening. Compatible with all smartphones, tablets and other media players with Bluetooth. Long-lasting rechargeable battery via USB-C port (cable included).