"Features:4G Fixed Wireless Phone - Support GSM850/900/1800/1900Mhz, Caller ID, Save more than 100 SMS on the phone, 7-level headphone volume and silence adjustable, Storage 20 missed call or received calls and the last ten dialed number. More functions will be described in user manual.Powerful battery - Built-in 3000mAh NiMH battery provides up to 2.5hrs of talk time and 150hours standby time.(depending on network environment)Multifunctional Telephone - It not only just a tool to call, but an alarm clock and having FM radio function.Great for Elder People - With big button and the font is clear and age-friendly.External Antenna - External antenna makes the signal receive more stable, get rid of the trouble of disconnection, ensure every call sound quality clear, unimpeded communication.Specification:Model: F317Color: BlackNetwork Support: GSMSize: 196 x 152 x 51mmBattery: 3.7V 3000mAhGSM Frequency: 850/900/1800/1900MHZSwitching Power Supply: AC:100-240 V; DC:5.00 V,0.65 ADisplay:128X64 dot array LCD Screen.Package Weight: 700g/26.5ozPackage Size: 27 x 19 x 5.5/10.6 x 7.5 x 2.2in"About Shipping: All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances. , , if you have , we will reply you within 48048 hours, wish you a happy shoppingThanks for your cooperation and we'll make you feel satisfied.