Feature●Volume control: incoming tones/voices are amplified to improve the clarity and volume of the voice on the listener. Ideal for the hearing impaired or for those who prefer a higher volume than the phone.●[Selective caller lock] - Avoid annoying and unwanted calls. Vtech caller lock allows you to block annoying calls and calls from unknown numbers. You can blacklist up to 100 blocked numbers.●Digital answering machine: The answering machine allows you to record calls when you are away. Duration max. The maximum storage time is 30 minutes.●[Conference Function] - The handsets intercom/hands-free function allows multiple users to participate in a conversation at the same time.●Other functions: backlit display and keyboard, phone book with 100 names and numbers, 8 quick dial buttons, hands-free function.Descriptionclass="celwidget pd_rd_w-nTIne pd_rd_r-NEYD0R9WDGGEAXAM4HGB pd_rd_wg-t1xj3" data-feature-name="aplus" data-csa-c-type="widget" data-csa-c-content-id="aplus" data-csa-c-slot-id="aplus_feature_div" data-csa-c-asin="" data-csa-c-is-in-initial-active-row="false" data-csa-c-id="3ta4dz-jwzd9h-kijw94-k66qgi" data-cel-widget="aplus_feature_div">