100% working. From pet & smoke free home Child headphone with volume limit 94dB (No need to worry about ear damage) Sliding volume control on cord up to volume limit Fold flat compact design for travel Comfort & Adjustable: Ultra-soft padded head beam and plushy foam earmuffs with 90°swiveling design ensure maximum burden-free comfort and minimum clamping force; 2.8in/7cm retractable headband offers the perfect fit for all kids aged from 2-16 with different head sizes. Additonal 3.5mm audio jack port allow you to daisychain other headphone so you can hear too.