I am struggling with my CM45 lately. In the beginning i had few to no issues and was very happy with how the watch performed but throughout the various updates, my watch has become worse and worse. It started with BT connectivity issues, the iphone app crashing and lately my battery doesn't even last for a day anymore, more like half a day. Also, when coming off the charger, it now seems to be frozen and "wakes up" 15-20 seconds later. I do not know if all these issues are connected to each other but it is starting to become very annoying. Already to the point that i start wearing my other watches more not to run out of battery during the day. I have though about doing a full reset but then i have to go and set up everything again and it shouldn't be like that with a device such as this. Curious to see if any near future update will improve the whole thing.