DescriptionHeadset parameters1.Wireless Version :V5.0+EDR2.Earbud Capacity :40mAh3.Charging voltage:DC5V4. Transmission Distance:10M5.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:350mah3.Case Charging Time: about 1.5 hoursPackage Included:1*Pair of Wireless Earbuds (Left & Right);1*Charging Case;1*Charging Cable;1*User Manual;