Features: 1. Ergonomic design, perfect fit in the ear canal, comfortable and stress-free, enjoy. 2. The high-sensitivity microphone allows you to receive sound perfectly and enjoy high-definition calls. 3. One-button remote control allows you to switch songs/calls freely. 4. Professional earphones, made of high-quality materials, with better elasticity and softer feel. 5. Smartly compatible with all Andriod and IOS mobile phones, and other audio devices such as tablets, computers, PCs, mp3 mp4 mp5 players. Notes: 1. Due to the lighting effects and shooting angles, there is a color difference in the product, please understand. 2. Due to manual measurement, there is a tolerance in the product size. Specification: Model: X15 Headphone type: in-ear headphones Plug diameter: 3.5mm Plug type: straight plug Frequency response range: 20-2000 (Hz) Impedance: 32 () Sensitivity: 98 (dB) Distortion rate: 2 (%) Wire length: 1+0.3 (m) Horn diameter: 10 (mm) Earplugs/earmuffs material: silicone Headphone wire material: high elastic wire embossed