My cheap Shokz knock-offs died, so no music for my morning workout. Thankfully I have a pair of actual Shokz headphones that I charged when I returned, and are ready to go. I paired them with my phone and it worked immediately. I'm set for my next trip to the gym! The cheap ones lasted about a year, and I noticed they were taking an increasing amount of time to charge. I think they initially took <30 minutes, but that time had extended to over three hours before they failed. The initial charge time for my Shokz was ~15 minutes.