I've had my watch 2 weeks and I'm very happy with it. The readings, from what I can tell, seem to be correct eg. Heart rate in line with my doctor's reading. Disappointed that it doesn't monitor BP, probably because Withings make a BP monitor. Also hope that the ECG function will be upgraded to pick up A/Fib above 100 bpm as that is where my bpm often sits. The TGA certification gives me a huge amount of confidence. The battery has great staying power although I fail to see how it will last 30 days. No matter, I'm still happy with it and can get 2 weeks and possibly more once the novelty wears off. I love the watch. The app is great as well.