Functions 1.Programmable 2.DAF (up to 220ms) / FAF 3.Looks like an MP3 player 4.Second memory 5.External volume control 6.Upgradeable software 7.Mute button 8.16-band frequency shaping 9.Rechargeable Lithium battery 10.Intelligent noise attenuation strategy(INAS) 11.Effective voice activation technology(EVAT)
