Features:100% brand new and high quality-With fashionable and stylish design that can reduce outside noise -Piston design give you a better sound quality-With metal composite membrane technology， it has high-fidelity and sound quality -Precision structure design and professional tuning method -The third generation damping system is for purer sound quality-Using break-resistant kevlar fiber cable that is durable-Comfortably fitting the ear， it is easy to wear -Aluminum alloy wire drawing effect， and anodic oxidation process-Corrosion resistance is strong-Compatible with most Android phones， and support part of the function for IOS devices-It is portable and convenient to carry when you travel -It is comfortable and soft for your ears-Suitable for sports and outside exerciseSpecifications: Material: enamelled copper wire Brand: Xiaomi Earphone Type: In-ear Color: black Jack plug size:3.5mm stereo Cable length: 1.25m / 4.1ft Frequency range: 20-20000Hz Earphone sensitivity: 98dB Speaker impedence: 32ohms Rated power: 5mW Earphone weight: 14g / 0.5oz Package size: approx. 7.3 * 7.3 * 3cm / 2.87 * 2.87 * 1.2in Package weight: approx. 94g / 3.31oz