Bluetooth version：V5.0 EDR Bluetooth protocol：HFP，HSP，A2DP，AVRCP Bluetooth chip：CSR8635 Noise reduction chip：AMS3435 Working distance：30m Working time（noise reduction+bluetooth music）：30H Noise reduction working time ：65H Standby time：600H Charger connector：Mirco Charging time：3hrs Charging capacity：3.7V1000mah Diver：40mm Charging voltage current：DC5V 0.5A Active noise reduction depth：24db Frequency range：20Hz-20KHz Microphone：sensivetity -38±3dB；frequency range30-16KHZ Impendance：32Ω Max SPL：110dB Audio connector：3.5mm Working temperature：-10℃-60℃
