http://www.obopro2.com

Piezo Buzzer, Magnetic Buzzer, Transducer, Sounder, Microphone, Mylar Speaker, Receiver, ceramic element

壓電式蜂鳴器﹐電磁式蜂鳴器﹐壓電陶瓷音片﹐
受話器﹐麥克風﹐喇叭

http://www.pro2inc.com

Headphone(corded headphone, noise cancelling headphones, wireless headphone, IR headphone)
Earphone(in-earphone, wood in-earphone, skull in-earphone, headsets for Iphone, pocket speaker)

入耳式耳機(耳塞式)﹐Iphone 免持式耳機﹐
頭戴式有線耳機﹐紅外線耳機﹐降噪有線耳機﹐
數位無線耳機﹐免持耳機﹐木質耳機﹐
口袋喇叭﹐骷顱頭耳機﹐金屬耳機﹐耳麥