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 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 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.