This premium metal earphone is crafted from CNC zinc alloy and weighs approximately 15g for comfortable long-time use. It features a 12mm NdFeB speaker with a frequency response of 20Hz to 20KHz, delivering deep bass, clear vocals, and high-resolution sound. With an impedance of 16Ω and speaker sensitivity of 100±3dB, it provides balanced audio performance. The built-in microphone supports calling and voice control, while the noise cancelling feature helps reduce outside sound. It supports play, pause, answer, and call end functions and is suitable for use with phones, laptops, tablets, gaming, and music listening. Designed for sports, travel, and daily use.