Real Madrid earphones

Blue Real Madrid earphones with a built-in microphone. Comes complete with an airtight box with a printed Real Madrid crest to store and transport them wherever you go.
Technical specifications:
- Diameter of speaker: 10mm (neodymium)
-Frequency: 20-20,000Hz
-Maximum input power: 30mW
-Impedance: 320hm
-Sensitivity: 105dB/mW
-Cable length: 1.2m.
-Plug diameter: 3.5mm. silver stereo plug
-In-built microphone