Fangrui Product Details Product Specifications: Bluetooth Version: 5.0 Battery Capacity: 50mah Standby Time: 160 Hours Charging Time: 50 Minutes Working Current: 12ma Charging Bin Battery Capacity: 2200mah Product Features: 1. Bluetooth V5.0, Supports Most Bluetooth Devices And Low Power Consumption The 2.2200mah Charging Bin Can Fully Charge 2 Earphones About 15 Times, Providing More Music Time 3. No Need To Put The Earphone Into The Ear, Providing Comfortable Wearing 4.8mms Dual Drive Unit, Enjoy 6d Strong And Deep Bass Music Sound Effect 5. Popular One-button Control, Support Switching Songs, Making Phone Calls, Volume Control And Voice Calls 6. Do Not Wear In The Ear, Comfortable And Painless 7. Electric Radiation Is Small, Does Not Hurt The Face, Sports Sweating, Does Not Breed Bacteria 8. Binaural Separation Design Can Be Binaural 9. Can Be Connected To A Mobile Phone At The Same Time, Can Also Be Connected To Two Mobile Phones 10. Can Be Charged For Mobile Phones, 2200mah Large-capacity Charging Bin, Can Provide Charging For Mobile Phones Designed For Modern Living