【Unlocked Mini Phone】 BM70 Support Single Nano SIM Card, Support 2G Networks: GSM 900/1800/850/1900(Unlocked GSM works with T-Mobile or Metro PCS, Will not work with CDMA carriers such as AT&T, Sprint & Verizon or Boost) 【Music Player & Bluetooth Headset】Small and Funny Electronic Gadget as Bluetooth Music Player. Very Clear Voice, and High Bluetooth Connectivity to Your Smartphones and Tablets for MP3 Music Player; It can be hung to be used as a Bluetooth headset 【Health Care】Only 1/7 lower radiation rate than other regular smartphones, it is the best phone to protect the pregnant women and baby to keeping far away from signal radiation.