Fangrui Product Details 1. 9d Surround Sound Effect, Colorful Bluetooth Speakers, Massive Music Playback And Multiple Playback Modes 2. Exquisite Bluetooth Speaker, Easy To Carry 3. Real-time Voice Collection, Loud And Clear Real-time Broadcast, No Delay And No Fear Of Environmental Interference 4. New Bluetooth 5.0, Stable Transmission, Bluetooth 5.0 Technology, Stable Transmission For Devices, Faster Connection, Low Power Consumption And No Lag 5. Top Tuners Personally Adjust The Pitch And Restore The Sound More Accurately, Allowing You To Enjoy High-fidelity Sound Quality Restoration. Bluetooth Version:5.0 Funct Ion:bt/tf/fm/ Battery:400mah(built-in) Speaker Size:52mm/36 Channel:stereo Hoyn Lmpedance:5w Voltage For Charging:3.7v Working Time:3-4h Charging Time:2-3h Note: Different Batches May Have Differences In Product Appearance, Color, And Printed Characters, Which Not Affect The Use Colour:black Material:abs Package Contents: 1 X Bluetooth Speaker 1 X Charging Cable Only The Above Package Content, Other Products Are N