Specification:BrandHaylouModelHaylou GT3Bluetooth version5.0Communication range10 metersBattery typepolymer lithium batteryCharging case battery capacity600mAhCharging timeabout 2.5 hours (charging case)Earphone battery capacity43mAhSupport protocolSBC/A2DP/AVRCP/HFP/HSPCharging interfaceType-CBattery lifeabout 28 hours (with charging case)Warranty3 Months Of warrantyFeature:Low power consumption and 28-hour long battery life provides the better user experienceAdvanced Bluetooth 5.0 ensures fast, smooth, and stable connectionEquipped with TWS+ technology, realizes dual-channel transmission and receptions of signalsDelivers superior Hi-Fi stereo soundDSP smart noise reduction makes sure crystal clear callsStable, lightweight, and comfortable for ears..