Spo2 Heart Rate, BPM Step count: Sleep Monitoring, USB 2.0 Magnetic attach charger. We get screen guard pre, applied Fire Boltt brand engraved on the strap buckle. Silicon strap, which is of good quality Additional free subscription, but not a great value, add Install Da Fit App from google play, store or Apple App store. Watch faces can be downloaded in app and transfers to watch.