Fangrui Product Details 1. Yesido Ysp23 Open Ear Anc And Enc Dual Noise Reduction Ows Bluetooth Earphone 2. Material: Pc+abs+uv 3. Bluetooth Version: Ab8932e V5.4 4. Bluetooth Protocol: Hfphspa2dpavrcp 5. Bluetooth Distance: Less Than Or Equal To 10m 6. Wearing Method: Ows Open Type 7. Noise Reduction Depth: -20db 8. Single Listening Time: About 7h ( Volume) 9. Total Listening Time And Call Time: About 35h (used With Charging Box) 10. Earphone Battery Capacity: Dc 3.7v60mah X 2 11. Charging Box Battery Capacity: Dc 3.7v500mah 12. Wired Charging Time: About 4-5h 13. Charging Interface: Usb-c 14. Features 15. Compact Design, Does Not Take Up Storage Space, Easy To Carry 16. Skin-friendly And Soft Liquid Silicone Ear Hook, Comfortable To Wear Without Burden 17. Adopting Ergonomic Ear Design, It Is Light As A Feather And Will Not Hurt When Worn For A Long Time 18. The Sound Quality Is Clear And Noise-free, The Bass Is Strong, And The Mid-high Frequency Is Full And Transparent, Bringing You An Auditory Feast 19. Anc Active Noise Reduction And Dual-microphone Enc Call Noise Reduction, Enjoy A High-definition Call Experience 20. Support Voice Assistant, Easily Control Operation Needs 21. Built-in Large-capacity Battery, With A Charging Case, The Comprehensive Battery Life Reaches 35h, Which Can Last For A Long Time