1. 4000 GROUPS BLACKLIST: Caller ID box has 4000 groups of large capacity blacklist storage, blocking all nuisance calls.
2. LCD SCREEN DISPLAY: Call blocker uses LCD screen display for easy and simple buttons for easy operation.
3. PLUG AND PLAY: Call blocking device is designed with dual plugs, plug and play, suitable for most landline phones.
4. ANTI HARASSMENT: Call blocker can block nuisance calls, super filtering anti harassment, guarding private .
5. EASY TO USE: Phone blocker is easy to use, just press the block to block incoming calls permanently.

Specification:
Item Type: Call Blocker
Material: ABS
Number Of Blacklists: 4000 Groups
Call List: 100
Display Brightness: 5 Levels Of Adjustment

Package List:
1 x Telephone Line
1 x Telephone Blocker
1 x Instruction Book
1 x Bracket

Note:
The product only applies to wired landlines and incoming calls only show the phone number. Working Principle: Add the numbers and the corresponding numbers will be blocked automatically, or set the area code and all the corresponding regional numbers will be blocked automatically.