http://www.amazon.com/Olympus-TP-8-Telephone-Pick-up-Microphone/dp/B007OXMHDE/ref=sr_1_1?ie=UTF8&qid=1420598149&sr=8-1&keywords=olympus+tp-8
 
http://www.amazon.com/dp/B000MYPPPE/ref=wl_it_dp_o_pC_nS_ttl?_encoding=UTF8&colid=HPRFGWUU4IWX&coliid=I1KQR21GZXQMA6
 
 
http://www.amazon.com/Audio-Technica-ATR-1100-Unidirectional-Instrument-Microphone/dp/B002HJ61PK/ref=sr_1_3?ie=UTF8&qid=1420598240&sr=8-3&keywords=3.5mm+microphone