Features: 1. 4G Wireless Landline Phone - Supports GSM850/900/1800/1900Mhz, caller ID, save 100+ SMS on the phone, 7 levels adjustable headset volume and silent mode, 20 storage spaces for missed or received calls and the last ten numbers dialed. 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 Seniors - With a large button and clear text that is suitable for the elderly. 5. External Antenna - The external antenna makes the received signal more stable, eliminating disconnection problems and ensuring clear and free communication in every call. Specification: Model: F317 Color: black, white (optional) Network support: GSM Dimensions: 196x152x51mm Battery: 3.7V 3000mAh GSM frequency: 850/900/1800/1900 MHz Power supply: AC: 100-240V; DC: 5.00V, 0.65A Screen: 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 2.2in Package list: 1 x Phone transmitter 1 x Headphones 1 x Phone cord 1 x Battery 1 x User manual