Porodo Soundtec Yotowave Kids Wireless Headphones cater to young audiences for a safe and enjoyable listening experience. They feature Bluetooth V5.4 for stable connections within a distance of 10 meters. The 40mm drivers produce treble and gentle sound, meaning actual quality audio with the frequency response of about 20Hz-20kHz. With an 85dB volume limitation, the noise in these headphones won't hurt kids' ears. The 200mAh battery gives 25 hours of playtime and 20 hours of talking, requiring 2 hours to recharge via Type-C. These cushioned headphones offer comfort with their breathable, skin-friendly material for the little ones to enjoy and listen to music and stories for endless hours. Easy navigation key controls make them a bit more handy to use. Ideal for school, travel, and play, the porch-down option doubles up for safety and comfort for kids.