Featuresgps languagessimplified chinese english whats in the boxusb cable user manual english supported operating systemsiphone mac os android ios materialssilicone typesmart bracelet capacity mah85 sim card typeno sim card slot connectivitynfc bluetooth40 sensorheart rate sensor smartphone assistantcamera control message control media control hands free calls fitness wellnesstimer heart rate monitor sleep tracker activity tracker community share alarm clock find my