Three male voice and three female voice, a full range of home phone can be used, with adapter
Alone at home can make the caller mistakenly think that men at home in order to prevent criminals,
can make the caller or the listener can not guess who you are, so can make the company to increase the number of staff,
office or busy can block many Important phone and people, friends play games between the use of sound.
Power supply : 9V battery or DC9V transformer can be used
Size: 14.5 × 9.8 × 3.8 cm