JVC canal type earphone HA-FXH30 Model: dynamic type. Playback frequency band: 8Hz ~ 26,000Hz. Output sound pressure level: 102dB / 1mW. Maximum allowable input: 150mW. Impedance: 20. Code: 1.2m (Y type), with 3.5mm 24 gold-plated L-shaped stereo mini plug. Weight: about 4.3g (without code). Accessories: earpiece (S, M, L each two), clip. Newly developed Direct top mount structure and Hi-SPEED micro HD unit deliver high quality sound. Triple cylinder structure (fiberglass, magnet, brass) makes a clear sound.