Product Parameter: Model : B25 Phone Size : 68mmX28mmX12mm Phone Weight :24g (Including battery) Battery : 380mAh Battery Phonebook : 300 Phone SMS:50 Camera : Non SIM Card Quantity :2 Nano SIM card and 1TF card Memory Card : 32Mb RAM , 32Mb ROM , Maximum support 16GB expansion (The system will occupy part of the memory,It is recommended to install a memory card before using the phone) Mobile system: Non smartphone operating system, unable to download application software Features: Blacklist Prevent harassment calls and fraudulent calls. Life is cleaner and more comfortable Automatic redial After activation, if a call is made to someone who is not answered, the phone will automatically redial the call until they answer or you proactively hang up Magic Voice Can be set to answer calls in three voices: men, women, and children. Effectively protecting personal privacy while also enhancing call enjoyment. Sync Music Bluetooth function can be used to transfer smartphone music to mini phones Package Included: 1 Setx(1 Phone, 1 battery,1 USB cable,1 User manual,1 earplugs, 1 earhook)