... telephone 1.Numbers record 2. Flash ,mute,redial 3.Ringer HI/Low 4.lock,Ring music ,calculator Hot line headset handset phone,call ... center headsetSpecifications:* Backlight LCD display, date and time* Record,Delete and Redial of incoming calls ... headphone It can be used without external power source The telephone has white and black colors to choose 0.3% ...