Anker Soundcore Liberty Air TWS True Wireless Earphones with Bluetooth 5, Touch Control, and Noise-Cancelling MicroBrand Name: ANKER Style: In ear Certification: CE Certification: FCC Certification: RoHS Vocalism Principle: Balanced Armature Origin: CN(Origin) Control Button: Yes Active Noise Cancellation: Yes Communication: Wireless Volume Control: Yes Wireless Type: bluetooth Is wireless: Yes Line Length: Nonem Function: For Mobile Phone Function: Common Headphone Connectors: None Model Number: A3902 Waterproof: Yes With Microphone: Yes Extra Features: Single