Specifications Name: Quad-core Dual Dynamic Driver Headphones Horn Diameter: 8mm Net Weight: 15.5g Line Length: 120cm Audio Jack: 3.5mm Sensitivity: 42(2)dB Frequency Response: 20~20000Hz Impedance: 16 Package includes: 1 x Dual Driver Headphones 3 x Earbuds Tips( 3 pairs of Bowl silicone case) 1 x Headphone Clip 1 x Elegant Carrying Case Features DUAL DYNAMIC SPEAKER CLEAR EARBUDS - This hifi deep bass built with two 8mm diameter dynamic driver. 8mm driver make bass more deep and fast. Dual core driver make music performance vivid and wonderful HEADSET WITH HD MICROPHONE - This Wired cell phone headset uses TPE material to wrap the Copper wire, make the cable more durable. The wired earbuds also built in microphone, one button combine the function of play music and phone call function, more convenient in daily life ERGONOMICAL WEARING DESIGN - Comfortable headset wired in ear earphone is designed according to the shape of the human cochlear implant, also come with 3 pairs silicone eartips, choose one of them to enjoy noise Isolating Music surrounding. Also can work as the In-Ear Audio Monitors FASHIONABLE & CLASSY - The earphone housing is made of mirror piano lacquer body which is elegant. Also, Its made of durable and atmospheric crystal wire cord. The best gift for your boys and girls. If you are a music lover, you should never miss it SWEATPROOF ATHLETIC EARPHONES - No matter workout in the gym or jogging outdoors,you can enjoy this crazy world PERFECT FOR DEVICES - This hifi audio headphone with 3.5mm audio jack, can work with most smart devices, Mp3, laptop,and other device with 3.5mm interface connector