Mivizu Universal Earphones with In-Ear Noise Reduction for 3.5 mm Earphone Jacks Compatible Models: Any sound-emitting device such as mobile phones, mp3 players, tablets. (iPod, iPhone, iPad, PC/Mac, ASUS, Acer, Kindle Fire HDx/HD, Samsung Galaxy devices, Google Nexus, and more) Functionality: Noise reduction earphones for traveling, commuting, or working. Silicone ear-buds fit close to your eardrums for sound isolation. Speaker Size: 10 mm. Frequency Range: 18-20,000 Hz. Sensitivity: 116+13 dB (at 1KHz, 0.5 Vrms). Impedance: 16 ohm. Cable Length: 120 cm +/- 20. Jack: 3.5 mm. Package contains: S, M, L interchangeable earbuds, headphone clip, and 1 set of earphones.