Driver diameter :10 mmImpedance: 32Ω± 15%Sensivity: 98 ± 3 dBmFrequency range : 20HZ-20KHZBattery capacity: 70mAhBluetooth version : V5.0Bluetooth protocol: A2DP, HSP, HFPEffective distance: ≤10mMusic /talk time: About 5 hoursCharging time : About 1 hourNet weight: 6.7gProduct size : 52x13.7x20.5mm