BiFo 1.63in Smartwatch [Features] "for" [Compatibility] &ndash; [Color] Fashion style with HD IPS 320*320 px display at 214 ppi precision, leather strap and pure steel case. Sapphire crystal watch dial, which further exaggerate it's beauty and quality;Google Play and GPS D6 supports Google Play, when connected to internet, you can use GPS to find the right route. Android 5.1 operating system and MTK6580 CPU: Uses the smartwatch as a smartphone with latest Android lollipop system. Advanced MTK6580 quad core 1.3GHz CPU makes the watch phone have perfect compatibility with Android and iOS systems. Free Gift For You:A piece of green 100% Eco-friendly silicone rubber sport wristband named JRGK Bracelet(8inches/20.2cm) . 1GB RAM + 8GB ROM, 450mAh battery: D6 has larger memory space than before generations, 8G ROM + 1G RAM is enough for you to use (Systems File will take a part , so you only can see about 5G avaiable ); 450mAh battery is for long using time. Bluetooth sync information from smartphone:After inset the SIM card , you can experience those functions: Send messages, Dial,See contacts, whatsapp, twitter, facebook etc. information and sync sports data. If only connected with Bluetooth:See messages, contacts, whatsapp, twitter, facebook etc. information and sync sports data.(Can not Dial)