Features: 1. 4G Wireless Landline Phone - Supports GSM850/900/1800/1900Mhz, caller ID, saves over 100 SMS messages on the phone, 7-level adjustable headset volume and mute, storage of 20 missed or received calls and the last ten dialed 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 the network environment). 3. Multifunctional Phone - It's not just a tool for making calls, but also an alarm clock and FM radio. 4. Suitable for Seniors - With large buttons and clear font, it is suitable for elderly users. 5. External Antenna - The external antenna enhances signal reception, reduces disconnection issues, and helps ensure clear communication during calls. Specification: Model: F317 Color: black, white (optional) Network support: GSM Dimensions: 196x152x51mm Battery: 3.7V 3000mAh GSM frequency: 850/900/1800/1900 MHz Power adapter: AC: 100-240V; DC: 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 inches Packing List: 1 x Phone Transmitter 1 x Handset 1 x Phone Line 1 x Battery 1 x User Manual