2021 Hieha OY712 Sports Foldable Waterproof Referee Mobile Bluetooth Earphone Headset Handsfree Earphones | Audio

Type    Stereo Bluetooth Headphone with MicBluetooth Version    CSR 4.01 + EDRSupport Profiles    HSP, HFP, A2DP, AVRCP.Operation Distance    10mTransmitting Power    Class 2Support TF Card    Up to 16GSpeaker Frequency Range    20~20KHzSpeaker Diameter...