I am happy with a Mi Band... 4. Tracks steps, sleep, heart rate and exercise, relays notifications, allows me to find my phone, lasts 2 weeks on a charge. And it's not going to be a disaster should I lose or damage one. The Mi Band line is top bang for buck. The thing that's putting me off from buying a newer model is that they got rid of the capacitive home button. For me swiping back is just not as quick. Sometimes to check time or step count while my hands are busy, I just tap it with my nose :^)