but, that must be why. I was disappointed after wearing them around the house for 20 minutes and my feet were throbbing. I cant heap enough praise about how good these sound. I made sure the indicator light on the earbuds themselves came on to show that they were charging, I?d let them charge until the charging light went off and then try unplugging them and plugging them back in again to make sure they received full charging power, I wiggled the cord as they were plugged in, I left them plugged in for a few days to see if THAT would do it. First off, I bought this not as a replacement for my beloved Pebble watch but to supplement it and its fitness tracking capabilities. 9 inches wide isnt enough for really heavy lifting - youd be just asking for injury. I reinstated original 5 stars. My reason for the 3 star rating is poor quality. I have purchased many sandals, boots, and shoes for myself and for my friends who have bad feet. This product is easily worth the 50$ in my opinion as I have tested quite a few other brands blue tooth earbuds in my search for something that wouldnt break whilst running and Tozo has been the only one to actually deliver on product promises and quality.