Sony’s WF-C500’s make it easier to get a pair of Sony XB buds in your ears. Being equipped with the brand’s XB “Extra Bass” technology, the streamlined, true wireless design thumps; and does so for up to 10 hours on a charge. 10 more hours of playback is stored in the charging case. With the Sony mobile app, users are able to make custom adjustments to bass & EQ.