2) You do not want to constantly have switched Bluetooth Yes, because it both memory and tired needs electricity. If you separate now both devices in order to join them later, so it can sometimes be the case that they can not see and you have to connect new phone and SmartWatch. Find the SmartWatch not a smartphone, it is easy from ...
3) ... if you then switch on again after a night out, the Smart Watch will immediately have a connection. The time you can see when your smartphone and SmartWatch are connected only again. Although the clock continues to run when you separate both units, but the problem with the connection would just make sure that you do not see the time when you desperately trying to synchronize the device. So anyone who hoped for an autonomous clock of the SmartWatch that could run without smartphone that is here at the wrong place.
4) The charging of the clock. Included is only a cable with a USB plug. If you want to charge the SmartWatch it means: either be run with the PC all the time, or plug it into a USB socket. Another problem is that the charging cable is not inserted at the clock, but must be sandwiched between terminal and clock, so that touching the contacts. I have therefore always put a heavy object on the SmartWatch for charging takes place. Such things can not be the point of it.
Conclusion: for the price of about 80, the SmartWatch has in my opinion, too many (small but annoying) weaknesses, the one not to make life easier, but more difficult. I have worn the clock a week now she is for 3 weeks on the shelf, because too unwieldy.