Fine tuned with sound and safety for your little one. JBL Safe Sound - maximum volume set is under 85dB to keep a safe sound level. Active Noise Cancelling - shut out all the noise and distractions. Communicate with built-in microphone. Up to 20 hours of playtime (30 hours with ANC off). Easy to use controls. Made with child friendly safe materials that do not break easily. Plug in or play wirelessly with audio cable and Bluetooth. Over-ear design offers long comfortable use. Includes Type-C charging cable and 3.5mm Audio cable.