MateriMaterial:   ABS
Driver unit:   40mm         
Rated input power: 20mW         
Max input power: 50mW         
Impedance:  32ohm        (at 1KHZ)       
Speaker sensitivity: 112db (at 1KHZ)     
Frequency reponse: 20HZ-20KHZ       
Plug :  3.5mm   
Cable: 1.2m