Metal frame the technology of diamond cutting and the surface sandblasting craft makes the watch more smooth and stronger airframe. It also supports to Insert SIM Card.</br>IPS full HD display screen gives you a 360 degree enjoyment.2.5 D arc edge grinding process of toughened glass will perfectly protect your watch.</br>Call double wheat noise reduction 5 magnetic speaker independent seal sound cavity restore the real and stronge bass.</br>Environmental TPU watch strap corrosion resistance and resistance to oil through the strict high and low temperature cycle test comfortable and durable</br>Seiko technology of the larger capacity lithium battery more safety and convenient disassembly and long standby time also send 1 more piece battery for free.</br></br>Product Description</br></br><b> Important features:</b> <br> 1. USB interface protective structure and a higher degree of protection avoid mian static electricity and sweat invasion <br> 2. ABS + PC engineering plastic pan stronger impact resistance <br> 3. More than 3 hours talking time and more than 120 hours standby time. <br> 4. Metal frame?? the technology of diamond cutting and the surface sandblasting craft makes the watch more smooth and stronger airframe. It also supports to Insert SIM Card. <br> 5. IPS full HD display screen gives you a 360 degree enjoyment. 2.5 D arc edge grinding process of toughened glass will perfectly protect your watch. Call double wheat noise reduction?? 5 magnetic speaker?? indep