Original M10 - M90 Pro F9 - F9 Pro Universal Wireless Earbuds Bluetooth 5.1 Power Bank Charging Box in Ear Earphones

Product Specification: 1.Model:M10-M90 Pro-F9-F9 Pro & Universal 2.Bluetooth specification:V5.1 3.Bluetooth Profile:A2DP,AVRCP, HFP;HSP 4.Working voltage:3.1V~4.2V 5.Charging voltage:5V-1A 6.Battery capacity of the headset: 50MAH 7.Battery capacity of the storage box:2000MAH 8.Transmission distance:>10M 9.Call time:4-5h 10.Play time:4-5h 11.Waterprof :IPX7 12.Charging time of headset:1 h 13.Charging time of the Charging box:2h. 14.Support system:All Bluetooth devices and mobile phones.