Built-in Mic & Great Compatibility : iClever wired headphones work with the build-in HD microphone for hands-free phone calls. These over-ear headphones for kids support a wide range of devices with 3.5mm audio jack like Chromebook, Kindle Fire, Switch, iPad, Smartphone, MP3/4, Study Tablet, Laptop, PC etc..Stereo Sound & Premium Comfort : With premium made 40 mm driver units, the kids headphones have a full, balanced stereo sound to allow kids to immerse in every detail of the audio. Additionally, a padded, adjustable headband and cushioned ear caps give the little one all-day comfort..85/94 dB Optional Volume Limiter : Children's ears are vulnerable to sound damage, hence choose the 85dB volume limiter for daily use. If the child is in a noisy environment like car or airplane, please adjust the limiter to 94dB for crystal clear sound..Kids Welfare : It only weighs 6.1 ounces, so it is a lightweight design for kids aged 3 and up, and won't become their burden. The wonderful sound is matched by standout comfort. Plus, iClever kids headphone is an ideal companion for sound occasions..Generous Warranty : At iClever, we always put customers first, and we're proud to stand by the quality of our products. If you have any issues with the wired headphones, feel free to reach us and we'll take care of the issue within 24 hours!