1). FSK and DTMF caller ID;
     2). Phone numbers/time checking;
     3). Pre-seting area code
     4). The coming numbers display,quick check and Re-dial;
     5). Displaying the last 5 groups of dialed numbers;
     6). Electronic calender,time,colck and days of the week;
     7). Volume adjustment;
     8). Thumder proof.
     2 years guarantee