Certifications: FCC, MSDS and UN38.3, Recharge time: 1 hour, Indicator lights – Blue exterior for case power level, Red interior when earbuds recharge, Operating range: 33ft/10m, Auto shut off after 5 standby minutes, Bluetooth® wireless earbuds housed in a 350 mAh recharger case, Music (stereo), hands-free calls (mono), Includes Micro USB charging cable and manual, Approx 40 minutes of play/talk time,