New BY99 Bluetooth Headset OWS Single Ear Right Ear External Sound Ear-Hanging Business Ear-Hanging Stereo Sports Headset

1. The Movement Cannot Be Thrown Off, The Stability Does Not Move, The SFE Is Designed To Stick To The Ear, And The Running And Jumping Do Not Fall Off. 2. No Need To Wear In The Ear, The New Concept Of Wearing, Ergonomic Zero Sense Design Light And Comfortable, All Day Wear Is Very Easy, Refreshing Without Ear Plug 3. Professional Directional Sound Transmission, Protect Privacy From Sound Leakage, Directional Sound Transmission Black Technology, High-efficiency Cluster Sound Wave Clear Sound Quality, Directional Into The Ear, Avoid Sound Leakage Embarrassment 4. The New Generation Of Acoustic Structure Cavity Brings Different HIFi Sound Quality Experience, And Cooperates With The Acoustic Structure To Explode Bass 5.IPX5 Waterproof And Dustproof, Rain Or Shine, No Matter Sweating, Or Outdoor Wind And Rain Can Accompany You To Exercise