Featuresr simple but luxurious designr exquisite workmanship delicate and luxurious designr lightweight ergonomical in ear comfortable to wear for a long timer quality silicone earbuds available in all sizesr r hands free wire function keys controlr hands free built in microphone reduce noise and echor convenient keys receivehang the call playpause songsr r circle iron hybridr dual dynamic and balanced armature units more musical detail 25 steps to build metal sound chamber