Features: brand new and high quality ● Easy to use: The button is very fun to use. When you have a troublesome number to make a call, just press the red button to speak and never answer the call continuously. (Do not display caller name) ● Eliminate unauthorized calls: The call block device has 2000 number blocking capabilities. Stop the troubled callers who are bothering you completely. ● One-touch function can block calls: The call blocker is very convenient to use. It is designed for senior citizens. Just press the red BLOCK button to stop all garbage calls. The per-fect gift for the elderly. ● Protect your privacy: The cell phone blocker is the best invention to enhance your landline phone privacy. Let's talk about all the annoying voice mails. ● Telephone numbers block international area codes: very useful for those international aggravated calls that use area codes seriously and any exchanges. Specifications: Material:Plastic Color ：Black Size: Approx.4.5x9x10cm/1.77x3.54x3.94inch Package Includes: 1 Pcx Blacklist Group Number Incoming Call Filter note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.