If I had not stupidly threw the package I will have returned. 1 / It takes more than 10 minutes to sync with my G3. 2 / Can not update the microsystem. The procedure given by EPSON does not work, with nowhere Error message identified 3 / No EPSON Support 4 / Questionable measures: for him I never normal heart condition, and I do not have a minute of deep sleep. Worse when I léve me to feed baby at night he did not notice, it remains light sleep! 5 / Uncomfortable when worn