Hello Isabella, you have acknowledged that the luxury Vivomove Luxe watch has a hardware problem in design that appears to be systemic. It seems that not even exchanging for another piece may not solve the problem unless you issue a new watch revision with a redesigned power management or a completely different HW design. As your client, I absolutely cannot accept your simple message as a solution that with less than 30% of the battery cannot be reliably paid with a watch. You can't afford that with a product worth hundreds of euros. The described problem cannot be marked as a property, it is clearly a defect. Nowhere in the documentation or at the time of purchase was I informed that with the watch I can only be pay for with more than 30% of the battery. How do you intend to deal with customers who have already bought this watch? Thanks, Pavel