The 500mAh battery capacity of the charging box can provide 3-4 full charges for two 45mAh earbuds, 8-10 hours of playback per charge. You can charge the case with the supplied cable which is more convenient.The earbuds supports touch control, providing convenient operation on volume control, previous/next song, pause and answer calls along as well as voice assistant control.The earphones significantly enhance the Bluetooth performance and provide faster speed, more stable connection, and wider compatibility than before.Dual ear noise reduction, wireless high-definition communication. Dual microphone noise reduction technology makes audio and video calls as clear as face-to-face conversations, allowing for normal calls during exercise.The earbuds are low-key and practical, suitable as a gift for men and women of different ages who love sports, exercise, and fitness. And of course birthdays, anniversaries, Mother's Day, Father's Day, Halloween, weddings, boys, girls and more.