Sony MDR-W08L

Vertical In-The-Ear Design reduces size and weight to the bare minimum; comfortable hour after hour
Slim Headband is ultra-light, ultra-comfortable
Sony Acoustic Turbo Circuit for high efficiency, gets high sonic output from your portable stereo
Neodymium Magnet for maximum energy in minimum size; Neodymium is comparably more powerful than conventional Samarium Cobalt or Aluminum magnets
13.5 MM Diameter Driver is small enough to fit inside your ear
Nickel-Plated Mini-Plug resists corrosion for high conductivity, low noise Type: Vertical, In-the-Ear, Open air, dynamic
Driver Unit: 13.5mm diameter
Magnet: Neodymium
Headband: Slim
Cord: TPC; Y-shaped, 3.3 ft (1.0m)
Plug: Nickel-plated
Stereo Mini Plug
L-shaped
Impedance: 16 ohms
Sensitivity: 104dB/mW
Power Handling Capacity: 50mW
Frequency Response: 20 to 20,000 Hz