FJunHappy Fitness Tracker, Color Screen Activity Tracker with Blood Pressure Blood Oxygen, IP67 Waterproof Smart Watch with Heart Rate Sleep Monitor Calorie Counter Pedometer for Men, Women and Kids

It does what it is up to, but longevity isnnowhere near good. This was taken once to bathroom during shower, but it was not ob wrist, just laid inside the bathroom; and it got moisture inside, which appeared first as 'fog' on the inside of the screen glass (or, rather, plastic). All functioned well for another couple days, but then the entire thing turned off and never came back to life.It seems that it is fully 'sealed', in that there does not appear a way to disassemble the tracker without breaking it. But the charging contacts do NOT appear to be sealed, which is probably the only way for moisture to get inside and kill the whole thing

No instructions. I did figure it out finally. Works pretty good.

I really liked this little gizmo and it did so many great things. but now, after what? 3 1/2 months? It either wont charge or wont stay charged, or is just plain broken. I'd like a refund or replacement, but Amazon says my window of opportunity expired in mid-June.