Hi There This is the CPR Call Blocker v.201 model. This unit is the same as previous models of our call blocker apart from the caller display screen that accompanies it. It has a pre-programmed list of 200 numbers altogether plus you can also block up to 1000 extra numbers at the touch of a button. There is the addition of a new feature with this call blocker, enabling you to block a call without pressing the BLOCK NOW button from any DECT (Digital Enhanced Cordless Telephone) handset. By simply pressing # then 2 whilst on a call to a valid caller ID number, the number is instantly added to the block list, meaning that number can't call you back again. We don't stock these units anymore but we do sell them as refurbished models to customers at a cheaper price than the newer models. Please feel free to use this thread to discuss the v.201 CPR Call Blocker model. If you require any help or assistance regarding this particular model, then feel free to post your questions.