These Bluetooth® wireless earbuds are housed in a 350 mAh recharger case. Plays music (stereo), as well as the ability to do hands-free calls (mono). Operating range: 33ft. Up to 4 hours of play/talk time. Auto shut off after 5 standby minutes. Recharge time: 1 hour. Indicator lights - Blue exterior for case power level, Red interior when earbuds recharge. Includes Micro USB charging cable and manual.