Describe:

Product Name: Headphone Speaker
Product Model: LC-301
Product size: 30*5.0MM (diameter*height)
Product material: rubber + metal
Magnetic circuit form: internal magnetic type
Frequency characteristics: full frequency band (full sound range)
Rated power: Rate 20/Max.50mW
Rated impedance: 32±10%
Sensitivity: 110dBAt1000HZ
Frequency response: fo~20 (kHz)
Harmonic Distortion: 1 (TMD%)