Sony EX300SL 

Sony's MDR-EX300SL has the same advance body design as MDR-EX500SL, that allows the user to easily put on the earphone with the correct fitting. It gets rid of unwanted noises, decreases a large percent of unnecessary vibration, stays comfortable for a long period of time, and produces superb sound quality and bass .

Dynamic Type: YES
Capacity (W): 100mW (IEC)
Driver unit (mm) 13.5mm diameter, dome type (CCAW adopted)
Diaphragm PET
Frequency (Hz) 5 - 24,000
Sensitivity (dB/mW) 105
Magnet Neodymium (300kj/m3)
Impedance (Ohm) 16 ohms at 1kHz
Cord type: OFC neck chain
Cord length (m) 0.6 / 1.2 with extension
Plug: Straight / L shaped stereo mini plug (Gold) on extension
Weight (g): Approx. 6 without cord