Product Feature: 180 degrees rotating design, suit for left and right ear.bluetooth V5.2 chip,stable singal transmission.Bluetooth transmission distance: 15 meters.Creative hook design and only 13g weight,stable and comfortable.Support adjust volume and change musicCapacity: 300mAhNoise Reduction: CVC 8.0Working voltage: 3.7VCharging voltage: DC5V 1.5AWaterprof :IPX4Charging Time: about 2 hoursTalking time: about 48 hoursMusic time: about 36 hoursStandby time:about 480 hoursPackage Content:1 x Bluetooth Earphone1 x USB Charging Cable1 x User Manual