DescriptionModel: Lenovo GM2 ProBluetooth Version: V5.3Speak Unit: 10 mmBattery capacity: 40mAhUsage Time About 5 hours (Earphones）Charging Time: About 1 hour Earphones）Frequency Range: 2.402-2.480KHzTransmission Distance: Up to 10 meters / 33 feetCharging Compartment Battery Capacity：350mAhWhat’s in the box2 x Bluetooth Earphones1 x Charging Case1 x USB Cable1 x User Manual3 x Earphone Cups(S,M,L Size)
