Feature: 1. Caller ID: This home landline uses DTMF/FSK dual system, and the caller ID is automatically recognized. 2. Adjustable Brightness: Real time date and week display, LCD brightness adjustable in 5 levels, ringtone volume adjustment. 3. Multi Function: IP function and single‑key storage function (M1‑M10), R key transfer function, ringtone volume adjustment. 4. Volume Setting: The software sets the ringing volume, pressing the button to set the ringing volume and hands free volume. 5. Flash Time: 90 95 100 120 180 300 600 1000ms FLASH time of the home landline is software optional. Specification: Item Type: Telephone Model: L019 Material: PVC Colour: Black Features: 1. DTMF/FSK Dual System Caller ID (Automatic Identification) 2. Incoming Call Number and Call Time Record 50 Groups (8 Digits) or 32 Groups (16 Digits) 3. 14 Groups (8 Digits) or 8 Groups (16 Digits) of Outgoing Numbers and Call Time Records Real-time Date and Week Display, Lcd Brightness Adjustable in 5 Levels 4. 1~99 Hours Do Not Disturb 5. 16 Common Ringtones to Choose 6. Software to Set the Ring Volume, Button to Set the Ring Volume and Hands-free Volume 9. 3 Groups of Alarm Function Settings, Each Group of Alarm Sound is Different 10. IP Function and Single Key Storage Function (M1-M1) 11. R Key Transfer Function 12. Ringtone Volume Adjustment. Package List: 1 x Telephone1 x Earpiece1 x Connection Line1 x Telephone Line1 x Manual