Hello the device was updated to v.60 and many problems arose. The day displayed on the device is a day before the current day, the device time is always half an hour more than the current time. Does not upload heart rate or sleep quality data to the Garmin Connect app. it was later upgraded to version v.70 but these issues persist. i have Checked the date and time of the paired device and the PC I connect. Try erasing the device and re-pairing it from app and garmin connect. Nothing works. watch does not show day, correct date, does not show daily heart rate or sleep. several days when the clock is useless to me. Thank you