Sony MDR-A44L

Vertical, In-The-Ear Design reduces size and weight to the bare minimum; comfortable hour after hour
Convenient, Folding Design with three hinges so you can store the headphones in a pocket or purse
Double Headband gives added stability for jogging and active lifestyles; broader weight distribution for added comfort
Larger, 16.0 MM Diameter Driver develops deeper bass; remains small enough to fit inside your ear
Neodymium Magnet for maximum energy in minimum size; Neodymium is comparably more powerful than conventional Samarium Cobalt or Aluminum magnets
Sony Acoustic Twin Turbo Circuit for high efficiency, gets high sonic output from your portable stereo; extends bass down to 10 Hz
Oxygen-Free Copper (OFC) Cord for maximum conductivity, minimum noise; conducts electricity better than conventional copper
Gold-Plated Mini-Plug resists corrosion for high conductivity, low noise Type: Vertical, In-the-Ear, Open air, dynamic
Driver Unit: 16.0mm diameter
Magnet: Neodymium
Headband: Double headband, Folds at three hinges
Cord: Oxygen-Free Copper; Y-shaped, 3.9 ft (1.2m)
Plug: Gold-plated
Stereo Mini Plug
L-shaped
Impedance: 16 ohms
Sensitivity: 108dB/mW
Power Handling Capacity: 50mW
Frequency Response: 10 to 23,000 Hz