The 1-Ear-Earbuds- has a 4-conductor plug, has a built-in microphone. will function with stereo earbuds set with all of your 3.5mm-audio-jack devices, whether that's your tablet, laptop, computer or TV. This earpiece has our 1-Ear style that we refer to as the 1-Ear Classic style earpiece, and it fits in either the left or right ear. Spring Heavy-Duty Cord is a newer soft, flexible cord that is strong enough for daily use. 3.5mm stereo plug is gold plated to maintain optimal contact and deliver clear crisp audio so you can listen to sound in one ear without losing either channel from a stereo source. [COMFORTABLE DESIGN] Featuring , soft silicone earbuds and a collar clip, our inner earbuds are engineered to create a comfortable listening environment without falling out. Product name: In-ear headphones Colour: black Material: PU Package Contents: 1 * Headphone 2 * Earplugs Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.