Mrice E300 Heavy Bass In-Ear Earbuds Earphones with Mic and Volume Control for iPhone,Smartphone Noise Cancelling and Triangle Cable Tangle-Free Headphones Headset-Black Red Triangle Cable:Triangle cable design,patent trangle-free and high tensile resistance Excellent Sound:With 9mm CCAW voice coil drive unit and tri-band equalization to further guarantees super bass and high resolution sound quality. Capsule Earbud:Ecslosed capsule in-ear design with soft silicone ear buds provide a super comfortable noise isolating effect. Light Weight:Extensive use of lightweight materials, so that the earbuds weight at only 4 grams, about 40% lighter than ordinary headphones.Gold-plated 3.5 mm audio jack, no-loss sound connection to your audio device. S/M/L Silicone Tips:This earbuds comes with three pairs different Silicone tips to comfortably fit your ear shape and size.