High-quality dynamic 13.5mm speaker makes HD clear sound, with a super bass stereo 3D effect. Built-in Microphone and In-line control, perfect for you to make hands-free calls, play music and change songs. In-ear headphones with an ergonomic design that make you feel comfortable. Flexible, lightweight, comfortable and secure, and can be easily screwed through a jacket, bag or backpack. Imported TPE transparent cable with fragrance, avoids winding, environmental and durable Brand & Model: UIISII HM9 Type: Wired In-ear Hi-Fi Earphone Impedance: 16Ω Sensitivity:102±3dB Frequency range: 20-20000HZ Plug Pin: 3.5mm Line Plug Speaker size: 10 mm Cable length: 120 cm Microphone: with Super Sensitive Microphone Line Control: Support Line Control for Mobile Phones