UBSOUND Orchestra - Premium Ergonomic HD in-Ear Earphones (IEM) Best worldwide ergonomic in-ear earphones under 25$. Generally delivered in 15 days. UBSOUND Orchestra premium IEMs for smartphones, tablets, MP3 players, DAP, DAC, portable gaming consoles, computers and any audio device with a standard 3,5mm jack. Color: matte black. High quality microphone for hands free calls with a single button to answer and hang up which can also be used to play and pause music. Maximum sound isolation and high quality performance playback. Fully ergonomic design with around the ear wear-style. High tech, lightweight, professional quality materials for maximum fidelity crystal sound in any condition. 1,2m tangle free wire. 3 pairs of eartips included: S, M, L size. Velvet feel pouch and user guide included. High performance 10mm HD independent dynamic drivers. Sensitivity: 115dB/mW. Frequency response: 15-21.000Hz. Impedance: 16. Maximum distortion &lt;0,2%.