mini subwoofer speaker 1. Acrylic crystal shell 2. USB,TF,FM for ... phone laptop 3. Big LCD screen 4. cometitive price Mini subwoofer speaker Specifications: Frequency response80HZ-20KHZSensitivity S\N85db±2dbDistortion≤0.5 ... )3. Track the order until you get the goods Mini subwoofer speaker