Features: 1. High And Bass Adjustment, Built-In Bluetooth, Wooden Cavity, Good Sound 2. Surround Heavy Bass, -Inch Mid-High Frequency Satellite Boxes, And Sub-Box Adopts Two 3-Inch Mid-High Frequency Units, Bringing High-Fidelity And Delicate Sound Quality Experience, Forming A Stereoscopic Sound Field And Bringing A Feeling Of Sound Immersion 3. Optimization And Upgrade, Full-Range Speakers, Bass Technology, -Size Full-Range Speakers, Provide Powerful Bass Output, Bring You A Different Listening Feast 4. Shocking Bass, 4-Inch Subwoofer, The Main Box Is Equipped With 4-Inch Subwoofer, And The Bass Is Powerful And Feeling 5. Wooden Cavity, Bring High-Fidelity Sound Quality, Wooden Cabinet Has Good Durability And Good Sealing, Which Can Effectively Reduce Homophony, Reduce Standing Wave Interference, And Make The Sound Quality More Real And Pure Description: 1. Frequency Response Range: 25Hz-20KHz 2. Power Supply Mode: USB 5V 3. Material: Wood 4. Output Power: 3W 5. Operation Mode: Connected By Wire 6. Main Carton Size: 139 x 159 x 186mm; Sub-Box Size: 105 x 70 x 77mm 7. Type: Bluetooth Version Black Colorful Light 8.Color: Black Package Contents: 1 x Main Speaker 2 x Sub-Speakers 1 x Instruction Manual In Chinese And English 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.