The watch is equipped with microphone and speaker; After connecting to your phone via Bluetooth, you can answer or make calls, store contacts and view call history directly from your watch; You are able to make a quick operation even occupied | The smart watch can receive notifications from SMS or App; You won't miss important information from your lover or friends, making your life and workout more concise and intelligent; Please note that you cannot text on the watch | The smart watch monitors your heart rate, steps and calories in real time; You can monitor blood oxygen manually on watch; Also, the fitness tracker provides a detailed analysis of your sleep quality at night, building a better bedtime and healthier life | The fitness tracker features 100+ sports modes such as basketball, yoga, ect; The smartwatch tracks your outdoor workout route as well if connected with your phone's GPS; IP68 waterproof rating withstands sweat, hand washing or rain day while exercise | This smart watch features 1.69 inch display; High contrast and saturation offer clear and vivid visuals; The fitness watch features over 100 cloud watch faces; You can set up exclusive watch dials through your photos album as well | The smart watches only take 2 hours to fully charge and last for up to 7 days of continuous use or 30 days standby time; The fitness tracker watch is compatible with most iOS 10.0 or Android OS 5.0 or higher smart phones (Not for tablets or computers)