I was worried about getting this watch, reading some negative reviews about Garmin Vivosmart 4. But I'm really loving it and I bought my mum one too. She loves hers as well. It does what it says it does pretty well. Tracks my sleep which helps me to find out about my sleep problems or at least justify why I feel tired the next day. I've had it for about a month now. Pretty quick delivery which is more than satisfactory! I just wish the battery life will last longer than 5 days. Other than that, can't complain!