GT-R Bluetooth Earphones Hanging Ear Bone Conduction Wireless Bluetooth Earphones Long Range Office Business Digital Display Screen

Model: GT-RBluetooth: V5.4+EDR+ENCHorn: Carbon film horn with a diameter of 13.6mmCharging compartment battery: 500maHeadphone button battery: 55mAVoltage/current: 3.7V 16mACharging voltage/current: 5V1100mACall time: approximately 8 hoursTotal battery life: approximately 70 hoursMaterial:...