Product Overview Product Name: Portable Bluetooth Speaker with Rechargeable Battery Model: KOLAV‑F852 Type: Private Model Brand: OEM / Neutral Audio & Performance Driver Unit: 8-inch woofer RMS Output: 40W Woofer Lighting: Yes Power Power Supply: DC 9V Battery: 7.4V 3600mAh rechargeable battery Functions USB / TF / FM / Bluetooth TWS support (if applicable) USB remote function Materials & Build Cabinet Material: Plastic Accessories Manual Remote control Adapter AUX cable Packaging & Logistics Package: Color box Packing: 1 set per carton Carton Size (MEAS): 310 × 290 × 410 mm 40HQ Loading Qty: 1900 sets Certifications CE ROHS SASO FCC COC (can supply)