Fangrui Product Details Colorful Ambient Lighting, Rhythmic With Music Massive Music Playback, Multiple Playback Modes Support Various Devices, The Signal Is Stronger And More Stable The Two Speakers Can Be Connected Wirelessly By To Form A Surround Sound Effect And Experience The Charm Of Music Surround. Real-time Voice Payment Collection Loud And Clear Broadcast, Real-time Without Delay Accurately Record Every Payment Collection Response Frequency: 70-18khz Transmission Range: 10 Meters Output Power: 3w Bluetooth Version: 5.3 Battery Capacity: 300 Mah Supported Functions: Bluetooth Function, Tf Card Playback, Fm Radio, Serial Connection, Voice Broadcast Colour:black Material:plastics Package Contents: 1x Bluetooth Speaker 1x Charging Cable 1 X Chinese And English Manuals Only The Above Package Content, Other Products Are Not Included. Note: Light Reflection And Different Displays May Cause The Color Of The Item In The Picture A Little Different From The Real Thing. The Measurement Allowed Error Is +/- 1-3cm.