Fangrui Product Details Low Energy Consumption And More Stable Bluetooth 5.3 For Stable Connection New Bluetooth 5.3 Chip, Transmission Distance Up To 10m, Low Power Consumption And Stable And Smooth Signal To Achieve True Wireless Freedom. To Perform A Concert With Series Surround Sound , Turn On The Two Speakers At The Same Time. After Starting Up, Take One Of The Speakers And Double-click The Power Button To Perform The Interconnection Operation. After Hearing The Prompt Tone, The Interconnection Is Successful. At This Time, The Two Speakers Play Songs Simultaneously. The Bass Diaphragm Is A Powerful Sound Field And The Shocking Subwoofer Is A In A Small Steel Cannon, Creating A 360 Surround Sound Effect With Equal Coverage, So That Everyone Around You Can Get The Same Excellent Listening Experience. Hands-free Calling Function For Efficient Online Conferencing. Built-in Microphone To Enable High-definition Hands-free Calling With One Click For Efficient Conference Calls. Intelligent Compatibility, No Limitations, Intellige