This bluetooth smart watch phone with apps like facebook and touch screen multilanguage android/ios mobile phone wrist watch phone with activity trackers and fitness band features compatible with samsung iphone htc moto intex vivo mi one plus and many otherwise request you to please read the entire product details to ensure you have a satisfied experience of our products. These are the technical details of the 4g smart watches for your reference - our product comes with bluetooth 2.0 - our product comes with a superior mtk 6261 chip-set compared to the other chip-sets available in similar models - we have a 1.56 captive touch lcd display. - we have a 240 * 240 resolution. We have a great inbuilt speaker and microphone of 8 amps and 0.7 watts. - we have a better display and a touch screen in our devices - we have an inbuilt g-sensor - we have basic software application.