Specifications:This is an ear-hook headset with a microphone, which is lightweight and portable.The earphone is composed of braided wire and steel speaker, which has good sound quality and stability.It also has a switching function, so you can switch back and forth between songs while listening to songs.Suitable for MP4, and all mobile phones with 3.5mm jack.Item Name: EarphoneWearing Method: Ear HookPlug Type: about 3.5mmCable Length: about 1.2m/47.24"Frequency Response Range: 20-20000HzImpedance: 16Sensitivity: 123dbDistortion Rate: 0.3 PercentEarmuff Material: SpongeMaterial: ABSFeatures: with Microphone, Ear Hook Headset, Good Sound Quality, with 3.5mm JackSize: 11cm x 5cm x 2cm/4.33" x 1.97" x 0.79" (Approx.)Notes:Due to the light and screen setting difference, the item& 39;s color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:1 x Earphone