Feature:1. [Stereo] This children's headset has a built in 40mm driver that can emit a fully balanced stereo sound, which is great for playing games and listening to music.2. [Sharing Port] Kids can plug another earphone plug into the sharing jack to share sound with friends or family, no splitter or special cable required, easy to use.3. [Comfortable] Super soft earmuffs and ear wrapped design, better isolate environmental noise, very breathable, even if worn for a long time, the child will not feel tired.4. [Foldable] This wired headset adopts a foldable design, which is small and easy to carry, it can be easily put in a suitcase or bag, suitable for travel, airplane, car, etc.5. [Compatible] Compatible with all smartphones, for Chromebooks, tablets, PCs, laptops, and all 3.5mm/0.1in jack devices, for Phone 7 and later, you will need interface to 3.5mm jack adapter.Specification:Item Type: Kids HeadphoneProduct Material: ABS + PVCWire Length: Approx. 1.8m/5.9ftColor: BlackImpedance: 3215% ()Sensitivity: 1103 (dB)Sound Principle: Moving CoilFrequency Response Range: 20-20k (Hz)Microphone Sensitivity -383dBMicrophone Impedance: 2.2KDirectionality: OmnidirectionalParameters: High Performance 36dB Voice Omnidirectional Condenser Directional Microphone360 Sensitive Microphone Can be Accurately Positioned40mm/1.5in Loudspeaker Unit, 4D Stereo Surround.Package List:1 x Kids HeadphoneNote:Manual measurement, please allow some errors.