This device is a kind of powerful multi-function call blocker which can block numbers added to blacklist, with the Pro call Blocker, your world finally get quiet.

Features:
Block unwanted callers.
FSK/DTMF dual system.
1500 numbers memories for blacklist.
Reviewing and deleting of numbers in blacklist.
Blacklists & whitelists of switchable.
Automatic reorganization of Tone/Pluse model.
LCD display: Date, Time and Week.
Reviewing of incoming and outgoing calls by UP/DOWN.
5 levels of LCD brightness adjustable.