Wireless earbuds with power display show the remaining battery of charging case by the number on the screen, and the charging status of earbuds by up and down of LED bar, which will fade when earbuds are fully charged. Bluetooth headphones with 650mAh battery capacity charging case have up to 36hrs of listening time with 5 additional charges (6hrs in buds/30hrs in case), you can get the extra electricity it takes to keep your music going.