Simba Over-Ear Hi-Definition SafeAudio™ Wired Headset Simba is extremely flexible while providing maximum comfort to your kid. This headphone features comfortable padded earpads and an adjustable headband that can grow with your child. Sound quality is clear with the sound levels never exceeding 85 decibels to protect young ears. Tech Specs Driver Unit Diameter 40mm Sensitivity 85dB ±3dB Frequency 20Hz-20KHz Impedance 32Ω Input Jack 3.5mm Cable Length 1.2m