Large buttons that can be replaced with family pictures for easy dialing. Adjustable volume with a maximum ringtone of approximately 110dB, allowing settings for silent, loud, or soft ringtones. Compatible with fibre optic and landline connections, ensuring battery-free operation (does not support SIM cards). Stores 8 one-touch emergency numbers and 10 dual-key emergency numbers, retaining them even after power loss. Three SOS emergency buttons for instant assistance, cycling through three pre-stored numbers in case of emergencies. This product features an incoming call indicator light, flash-disconnect call transfer, and a redial function. It is designed for ease of use, especially in emergency situations, ensuring that help is just a button press away. Color: White Material: plastic Package Contents: 1*Phone 1*remote control Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.