100 names and numbers, up to 100 names and phone numbers can be entered and stored. The phonebook allows you to make calls without having to call manually. Just search for the name and select the number you want to call. Talk time for 15 hours, a full battery charge will provide about 15 hours of talk time before the battery needs to be recharged. "Clear Voice" technology The high-resolution error correction system ensures clear conversation with less audio glitches, allowing you to enjoy a smooth, error-free conversation even when you're away from the base unit. Use the phone without holding it with your ear, just press the speaker button and the speaker function if you want other people in the room to join your conversation or you want to use the phone without holding it in your ear, no problem, just press the "Speaker" button. Caller ID is a subscription service offered by many phone service providers. When you receive an external call, caller information is displayed. Caller information for the last 50 callers is recorded in the caller list from the most recent call to the oldest. Contact your service provider/phone company for details. The top key flashes according to the optical resonance status and the smart function key. The smart function key (top key) at the top of the phone flashes according to the situation. This provides a whole new level of easy use. The keys have a positive pressure feeling, short press keys. The keys don't protrude away from the phone, so they only require a gentle press and have a positive feeling. Easy to Operate on Eco Mode, One-touch Eco Mode Button, One-touch Eco Mode lets you reduce power consumption with a single touch by pressing the Echo button on the phone. In Eco mode, signal output is reduced by 90%. Compared to normal mode.