Description: 1000 group numbers (up to 16 digits) blacklisted capacity,Turn ON / OFF feature to Block all calls without caller ID. When you are picking up a call junk, you can add it to the blacklist by simply pressing "*" on the phone keypad. When you perform a garbage call is ringing, simply push a button (BLACK LIST), then the call is added to the blacklist. When you missed a junk call, review the caller's call history and find it. Then you can also add it to the blacklist by pressing the button on the BLACK LIST blocker. Small box, small size, do not take up much space.Desk mounted and wall mounted. Specification: Material: plastic Size: 88x75x42mm Package Includes: 1 Piecex Incoming Call Blockers 1 Piecex Crystal Head Line Connecter Note: This item only needs two AAA batteries.(not included)
