Features: 6Mm Dual Moving Coil Unit Make The Middle And High Frequency More Natural And Bass Stronger. Built-In Mic Enables Hands-Free Calls. With In-Line Control Easy To Control Volume Music And Calls. 3 Sizes Of Silicone Earcaps And 1 Pair Of Memory Foam Eartips Guarantee Long Time Wearing Comfort. Universal 3.5Mm Gold-Plated Plug Compatible With Smart Phone Tablet Pc Mp3 And Other 3.5Mm Audio Devices. You Don't Have To Worry About Running Out Of Power Give You Unlimited Wired Listening. Specifications: Brand Name: Model Number: Kd7 Type: Dual Moving Coil In-Ear Headphones Driver Unit: 6Mm + 6Mm Frequency Response: 20-20Khz Resistance: 16 Sensitivity: 953Db Plug: 3.5Mm Stereo Gold-Plated Microphone: Yes In-Line Remote: Yes Color: Black Transparent (Optional) Cable Length: Approx. 1M / 3.28Ft Headphone Weight: Approx. 13G / 0.46Oz Package Size: Approx. 8.6 * 6.0 * 3.0Cm / 3.38 * 2.36 * 1.18In Package Weight: Approx. 38G / 1.35Oz You Will Receive: 1 * Kd7 Earphone 3 * Pairs Of Earcaps 1 * Storage Box