I have had a Vivoactive HR for a while now and have had a number of issues in reconnecting after recharging the device. The latest time has taken over 6 hours. I have to do this every week. It's completely ridiculous. So many models and versions, yet looking at their for a it looks like that they are just out to dish out new devices and don't care to make any of them actually work reliably. Definitely the last time I buy a Garmin device.