Outdoor sports headset $ 7.83 Material: ABS. Performance: TWS bluetooth headset Features: LED power digital display + mobile phone charging power supply Applicable model: applicable to all mobile phones and smart devices with bluetooth function Bluetooth version: 5.0 + EDR (cylan) Protocol mode: A2DP, AVRCP, HSP, HFP Sound: English Effective distance: 10m (barrier-free) Microphone: yes Binaural pairing mode: automatic pairing after startup Horn diameter: 8mm