Lenovo X4 Bone Conduction Bluetooth 5.0 Headphones Open Ear Sport Earphones, 501 Original

Lenovo X4 Bone Conduction Bluetooth Headphones Open Ear Headset Wireless Earphones for Sport Running WorkoutSpecification:Brand: LenovoModel: X4Bluetooth version: 5.0Bluetooth protocol: A2DP/AVRCP/HSP/HFPDriver unit diameter: 10mmTransmission distance: about 10 meters (without obstacles)Sensitivity: 36 decibelsImpedance range: 32ΩSignal to noise ratio: ≥70dbDistortion: ≤5%Frequency range: 20Hz-20kHzDriver unit sensitivity: 108dBBattery capacity: 150mAhCharging port: USBColour: BlackProduct size: 129*112*70mm/5.08*4.41*2.76\\\"Product weight: 25gPacking size: 161*130*75mm/6.34*5.12*2.95\\\"Gross weight: 140gNote:There may be slight size deviations due to manual measurement, different measuring methods and tools.The picture may not reflect the actual color of the item because of different photographing light, angle and display monitor.Package Content:1 Pair X Earphones1 X Charging Cable1 X Manual