Rated power: 25W (15W + 5W*2) Degree of distortion: 50dbS/N: >80db Frequency Response: 80Hz~240KHz Supports FM radio, USB, SD card and AUX Rated power: 25W (15W + 5W*2) Degree of distortion: 50dbS/N: >80db Frequency Response: 80Hz~240KHz Supports FM radio, USB, SD card and AUX Bluetooth speaker system, stream music The Music-F S-908 Bluetooth Subwoofer offers extraordinary performance and remarkable quality to deliver a phenomenal music and home theater experience. Use the phase adjustment and crossover adjustment controls to fine-tune the sound for your particular music.