The call block device has a 2000 number blocking capacity. Completely keeping your phone quite without annoying call. The phone number blocker can block international area codes, it's useful for those international aggravating calls that deceptively adopt your area code and any exchange. One-touch blacklist function, super easy to operate even without manual. The phone call blocker is thegreatest invention to enhance the privacy of your home phones. Say goodbye to all annoying voice-mails. With just 6 buttons on the blocker and clear LCD screen, friendly for older people as well. A great choice for . Note:due to different batches, the printed words of the products are different, which does not affect the use. Size:10 x 9 x 4cm Weight: 85g Color:Black Material:ABS Package Contents: 1 x Blocker 1 x Connecting Cable 1 x English instruction manual Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.