External Dimensions (Height x Width x Depth): Parent Unit Approx. 3.1 x 6.3 x 7.4 inches (78 x 159 x 189 mm); LCD Screen: Parent Console "2.8 model (Kanji Display); Equipped with a "annoying prevention function" that will leave messages before the call sounds; *Settings are required to reject junk calls" in the light Easy to understand "incoming calls. Equipped with an alert LED on the console, this device will send a warning message to the other end before the call sounds are sounded. *Set is required. If you use the number display service, the anti-bothering function will only work when it comes from someone who is not registered in the parent phone book. Equipped with a function that displays the absent call history without a number or display agreement (date and time only).