The Gigaset AS690 Duo cordless phone is a practical and reliable solution for home or small office communication, featuring two black handsets designed for desktop use. It stands out for its backlit LCD display, which provides clear information and intuitive menu navigation thanks to high contrast between white letters and a black background. The integrated hands-free system allows calls with freedom of movement or enables group conversations, while the customizable acoustic profile adjusts frequency tones to optimize audio experience according to user preferences. It can store up to 100 contacts in the phonebook and log the last 25 calls with time of receipt, making call and contact management easy. Functionally, this model includes advanced management options such as a blacklist for up to 32 numbers and the ability to mute anonymous calls, ensuring greater privacy control and avoiding unwanted interruptions, plus the option to create VIP groups to always receive important calls. The handset battery allows up to 14 hours of talk time and up to 180 hours standby, providing enough autonomy for intensive use without frequent recharging. The Gigaset AS690 Duo is expandable up to four handsets on a single base, adapting to communication needs in different rooms at home or in the office. The integration of ECO DECT technology ensures efficient and environmentally friendly operation, minimizing radiation in standby mode and dynamically adjusting power during calls to reduce energy consumption. This model combines usability, protection against unwanted calls, and energy efficiency to deliver a modern and functional telephony experience in any environment.