"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: F317 Color: Black Network Support: GSM Size: 196 x 152 x 51mm Battery: 3.7V 3000mAh GSM Frequency: 850/900/1800/1900MHZ Switching Power Supply: AC:100-240 V; DC:5.00 V,0.65 A Display:128X64 dot array LCD Screen. Package Weight: 700g/26.5oz Package 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. Any questions, please feel free to contact us During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 8694 hours, wish you a happy shopping Thanks for your cooperation and we'll make you feel satisfied.