WTP-133 is a special listening earphone, it is suitable for 3.5mm only listening to audio jack of various devices, compatible with MOTOROLA, Kenwood, Baofeng and other arm speaker McFeng and CD, MP3 and other electronic devices; Ear hook It changes the direction of the outlet and can be replaced with different sizes of earplugs, the sound is clearer and more concentrated when using, the earphones will not loose and fall when moving, the ear hook is made of rubber material, and the contact with the skin is more comfortable and delicate; The spring cable is made of TPU material, the gold plated pin has better conductivity, the cable length between the connector and the speaker: 14 ",Cable can be stretched to: maximum 28", cable diameter: 2.0mm.