... (single,double,folding pin are available)Product Feature:- Plug:3.5mm pin,single,double,active plug- 32ohm / 300ohm- ... double fixed pin,folding pin,1 in 2 transfor. 3.Certificate: CE & ROSH Model 130A feature:1.Material ... ABS 2.Color Optional 3.Speaker 13mm 4.Sencitivity 95+/-3dB at 1000Hz 5 ... 2.65mm 11.Weight Apprx.12g 12.Plug 3.5mm stereo pin(single,double,folding pin are ...