... , dial keys 3, clock, date,Caller ID display fuction4, FSK / DTMF dual mode, 30 groups caller ID records, call-back, and automatic long ... long product life; 10, the use of fiberglass panels for circuit boards, to eliminate the damp phenomena, anti-magnetic, ... -drying, anti-static; 11, with metal surport, functionality, warranty for one year. Suitable place: tea room, coffee shops, restaurants, jewelers ...