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Caller ID Box for Landline Phone Number LCD Display with Call Blocker - Stop Unwanted Calls, Robocalls, Spam, Telemarketers

  • 4,000 unwanted phone numbers Caller ID memory for incoming calls.
  • Automatically block unknown and private numbers by turning on the BLOCK NO CID feature.
  • Powered by your phoneline. Uses batteries as backup. Requires home-based phone service with Caller ID service. Works with most landlines and VoIP services.
  • Simply press the BLOCK button to block an incoming call permanently.