Monaural Earphone, type: Dynamic type, driver: φ11.5mm, Output sound pressure level: 102dB/mW, Playback frequency:18~22,000Hz, Maximum input level: 40mW, Impedance: 16Ω, Weight(without code): 4g, Code length: 1.2m, Plug type: φ3.5mm gold plated monaural mini(L type)