1: Drive Dimension: 53mm. 2: Impedance: 64 Ω. 3: Sensitivity: 100±3dB. 4: Frequency Range: 12-25kHz. 5: MIC Size: 6.0*2.7mm. 6: MIC Sensitivity: -38±3dB; Impedance: 2.2kHz. 7: Audio Cable: OD 5mm*170mm (including connector) 8: Receiver: C-to-A Port Dual-in-One. 9: Supported Protocols: A2DP/HFP/HSP/AVRCP. 10: Bluetooth 5.4, Effective Range: >10m. 11: Carrier Frequency (MHz): 2402–2480MHz. 12: Battery: 2000mAh 3.7V, Charging time: Approx. 4 hours. 13: Operating time: 250H (at approx. 50% volume - lights off)
