Fangrui Product Details : 1. Plug And Play, One-shot, Plug It In And You Can Use It, The Phones Loudspeaker Is Five Times Louder To Turn The Audience Around. 2. Upgrade And Innovation, Plug And Play, No Need For Any Settings, Convenient And Time-saving Pairing, One-second Link, Say Goodbye To Cumbersome. 3, 5 Times Amplification, Increase The Sound, Enhance The Audio-visual Senses, Let The Ears Be Immersed In The Scene, 4. Not Only The Volume Is Large, But Also The Sound Quality Is Good. The Powerful Passive Radiator Not Only Improves The Volume, But Also Improves The Sound Quality, Allowing You To Experience Lossless Sound Quality. Multi-scenario Application: Listening To Music, Navigating Loudspeaker, Playing Games On Mobile Phones. Long Press The Switch, Short Press Mute. Self-contained Power Supply, Fast Charging, Independent Power Supply Design, Micro-usb Charging Interface, Audio-visual Does Not Consume Mobile Phone Power, Charging For 45 Minutes At A Time, You Can Listen To It When You Charge It, And Listen To It