DescriptionHeadset parameters1.Wireless Version :V5.0+EDR2.Earbud Capacity :30mAh3.Charging voltage:DC 5V4. Transmission Distance:20-30M5.Hours of use: 3-4 hours of talk, 3-4 hours of music playback6.earphone Charging Time: about 1 hoursCharging Case Parameters:1.Input current :5V 1A(TYP)2.Charging Case Capacity:400mah3.Case Charging Time: about 1 hoursPackage Included:1*Pair of Wireless Earbuds (Left & Right)1*Charging Case1*Charging Cable1*User Manual