First of all a big thank you to Mighty Ape for stocking this product and delivering it ultra fast to our doorstep, excellent service as usual! I managed to grab a pair of this headphones during sale, for the ridiculous price of $45, and I couldn't be happier! The quality of the product is way above the full retailed price, everything from the packaging to the headphones themselves is built with premium plastic, soft to the touch and tightly assembled. I love the little battery case with 4 blue led showing the charge of the headphones and the battery itself (when the headphones are not in charge) and the little inside pocket to keep the usb cable. The headphones themselves are well designed, rubberised to not slip during workouts, they perfectly fit inside and around the ear, and they always stay in place. They also come with a spare set of buds. When removed from the battery case they automatically power on and pair with the matched device, and between themselves. It is also possible to use just one of them. The sound quality is very good. There is no audible difference between the sound quality of this Cowin earbuds and other more expensive sport earbuds. Keep in mind that this are Bluetooth Sport headphones, so don't expect the best sound quality ever (if so you are better looking for a different product, with cable and full ear covering etc..) but you won't be disappointed during workouts. Overall I am really happy about the purchase, really recommended!