THE SMALLEST BLUETOOTH HEADSET MINI PHONE IN THE WORLD: Supports Dual-sim Nano Card (or One Card + One Tf Card), This Phone is Very Suitable for Making Calls and Easy to CarryMINI PHONE: the Mini Phone Has a Speaker and a Microphone, Inserting a Micro Sim Card Can Be Used As an Independent Main Phone. It is Very Practical and Can Be Used when Traveling or As a Backup Mobile Phone in the Car.HEALTH CARE: the Radiation Rate is Only 1/7 Lower Than Other Ordinary Smartphones, and It is the Best Mobile Phone to Protect Pregnant Women and Babies from Signal Radiation.GLOBAL GSM FREQUENCY: Quad-band Dual Card Gsm 850/900/1800/1900mhz. It Only Supports 2G (GSM)PURCHASE SERVICE: Please Contact Us if You Encounter Any Problems During the Purchase Process, We Will Give You a Satisfactory Answer within 24 Hours