Twinbuys M5 Mini Mobile Card Phone for Basic Back Up Use Kids Gift 2G Micro Sim(White) Handy and Portable: 4.8mm 1inch Credit Card Size Ultra-thin body with 1.0 inch OLED Screen display, low radiation Stable Connection: Support single micro sim card and 2G network GSM 850/900/1800/1900MHz,works well even in enclosed areas A basic phone: Support Call, Phonebook, Messaging, Calendar, Alarm, Calculator Bluetooth etc, enough for daily use. An ideal back-up phone: 320mAh battery with 72-96 hours standby time, super power-saving, reliable in emergency situations Great for kids or grown-up who just want a phone but not a smart phone; Multicolor available: black,white,blue,green,pink