MANILA, Philippines — Commission on Elections (Comelec) spokesperson James Jimenez on Sunday said the earpiece Vice President Jejomar Binay was wearing in Sunday's debate is not a device for coaching but an earpiece for clearer audio.
Asked why Binay was the only candidate wearing an earpiece, Jimenez said it is to override noise. He added that it was offered to all candidates but only the opposition leader chose to wear it.
http://www.philstar.com/headlines/2016/02/21/1555419/comelec-exec-binays-earpiece-not-coaching