I have connected it to my laptop, PC, several different other power supplies to eliminate that as a cause. I have a travel charger and one i keep at home. both have the same results. have tried holding the power button then placing into the cradle, still not working and blinking red light. i have had 3 watches sent in for repair / replacement in the year since i first purchased this watch. now it is out of warranty. this is by far the most problimatic smart watch i have ever owned. very dissappointed.
I have only had my watch 6 weeks. It is the 40mm lte. The battery has never been impressive, and I always have to charge in the morning every day. This morning when I woke up it was very low so I placed it on the charger. I When I came back for it I could not get it to turn on, it did not show the % of battery. I have tried moving the charger, and used a different charger. I was able to hold power button it said rebooting, but now it will not do anything!