Features: 1. 4G Wireless Landline Phone - Supports GSM850/900/1800/1900Mhz, caller ID, recording 100+ SMS on the phone, 7 levels adjustable headset volume and mute, 20 storage missed calls or received calls and the last ten numbers. More features are described in the user manual. 2. Powerful Battery - Built-in 3000mAh NiMH battery provides up to 2.5 hours of talk time and 150 hours of standby time. (depending on network environment) 3. Multifunctional Phone - It is not only a tool for making calls, but also an alarm clock and FM radio function. 4. Perfect for the Elderly - With large buttons and clear font, it is suitable for the elderly. 5. External Antenna - The external antenna makes the received signal more stable, eliminates disconnection problems and ensures clear and unobstructed communication in every call. Specification: Model: F317 Color: Black, White (Optional) Network Support: GSM Size: 196x152x51mm Battery: 3.7V 3000mAh GSM Frequency: 850/900/1800/1900 MHZ AC Power Supply: ATT:100-240V; CC: 5.00V, 0.65A Display: 128 x 64 dot matrix LCD. Package Weight: 700g / 26.5oz Package Size: 27 x 19 x 5.5 / 10.6 x 7.5 x 2.2 in Packing List: 1 x Phone Transmitter 1 x Phone Receiver 1 x Phone Cord < li>1 x Battery1 x User Manual < /ul> With the concept of customer first, we provide you with 24/7 customer service. No matter where you are or what issues you encounter, we will resolve them for you as soon as possible to ensure your shopping experience is worry-free.