This phone will only work with 2G: GSM 850MHz\/900MHz\/1800MHz\/1900MHz  It's unlocked for worldwide use、 customers please take a check to see if your local area network or the communication operator you are using is compatible with this phone before purchase. You can also go to this topic [===Official Help Center=== How To Check If This Phone Can Be Used In Your Country] to find how to confirm this.                     Hardware           CPU       MTK2502C           Memory       128MB+64MB           Display       1.54” IPS HD Screen  LCD; 240*240 pixel           Touch Screen       Waterproof capacitive touch screen           Bluetooth       Version4.0+3.0           SIM card       Micro SIM           Interface       Waterproof charge dock           Battery       Rechargeable Lithium battery 300 mAh、  stand by: 96 hours、 Working time: 48 hours             Talk time: 4 - 4.5 hours                       Specification           Size       48.5*43.5*13.0 mm\/ 12.3*11*3.3 inch(watch case)    Total length:48.5*43.5*265 mm  \/12.3*11*67.3inch ( watch case+band)           Packing size       100*100*80mm\/ 25.4*25.4*19.1inch (color box)    20pcs\/ carton           Weight       Net weight: 55g           Material       Polycarbonate+TPU+Silicone\/ double shot molding            Language       English、Russian、Spanish、Portuguese、Italian、French、German、Dutch、Turkish           Strap Material       TPU band+German Imported Bayer Polycarbonate+ 304 Stainless Steel Buckle           Color       Black+Orange、 Black+gray、 Black+blue           Acceleration\/Gyroscope       3axis、 3DAcceleration、 Step Analysis、 sedentary Remind、     heart rate & sleep monitoring、 anti lost、 remote capture、voice call、music play etc                       Support System       Nucleus\/ iOS 7.0 &  Android4.4 above           Package included       1 X M68 IP68 Outdoors Sport Smart Watch           1 X Micro USB Charge cable           1 X User Manual   Dear customer、 you can download the English manual from the link below:https:\/\/drive.google.com\/open?id=0B3kBxc-YfJAuOHFad2J4NmJiM2s