Charges fast and without issue. Without the sleep mode, battery drain happens and your phone will still try to connect to them. My doctor told me to wear supportive foot wear at all times especially in the house where I am normally in socks only. I got out a sanding block and it?s better, but still doesn?t have the traction all my other fitflops have. Only complaint is it stretches out after a lot of use. I love that they come with a case and 3 extra pairs. This was worth the price. )Once completed and installed though, the Roeam mount allowed adjusting the position of the Varia taillight to a vertical position, as the photos show. Overall a good set for the money. This means you cant really have an Auto EQ on your phone, whilstswitching between these profiles, as what sounds good for ANC on mode sounds terrible for ANC off mode and vice-versa.