Feature: 1. The product is to block the unwanted calls such as robocalls and political calls. 2. Dual system of FSK and DTMF. Large capacity of 2000 phone number memory blacklist. 3. Can only store blacklist, cannot set whitelist, convenient to use and easy to operate. 4. You can press the last/next button to check the incoming and outgoing calls. 5. High quality guaranteed, stable performance, you can use it with confidence. Specification: @font-face{ font-family:"Times New Roman"; } @font-face{ font-family:"宋体"; } @font-face{ font-family:"Calibri"; } @font-face{ font-family:"Arial"; } p.MsoNormal{ mso-style-name:正文; mso-style-parent:""; margin:0pt; margin-bottom:.0001pt; mso-pagination:none; text-align:justify; text-justify:inter-ideograph; font-family:Calibri; mso-fareast-font-family:宋体; mso-bidi-font-family:'Times New Roman'; font-size:10.5000pt; mso-font-kerning:1.0000pt; } span.msoIns{ mso-style-type:export-only; mso-style-name:""; text-decoration:underline; text-underline:single; color:blue; } span.msoDel{ mso-style-type:export-only; mso-style-name:""; text-decoration:line-through; color:red; } @page{mso-page-border-surround-header:no; mso-page-border-surround-footer:no;}@page Section0{ } div.Section0{page:Section0;}Item Type: Call BlockerModel: CT-CID803Material: ABSColor: BlackLCD Display: Backlight6 Buttons: Settings, Output, Blacklist, Delete, Last/Next Package List: 1 x Call Blocker1 x User Manual1 x Connecting Line1 x Hook