Serene Innovations Amplified Answering Machine HC-VM150 Selectable slow playback speeds to understand all words at the first message playback Powerful amplifier and large speaker increases sound up to 40dB+ HDS (Hi-Definition Sound) technology makes all words sharp and clear Output jack for telecoil or neckloop for hearing aid and cochlear implant users re-recorded greeting message (English, French, or Spanish) 40 minutes recording time, remote access, toll saver and more