SKP PRO AUDIO SK-4P BK Powered Loudspeaker, 15", Bluetooth, 1000W MAX, 2 Way, Bluetooth, USB SD port. One Speaker Peak power: 1000W - RMS Power: 250W Bluetooth - Woofer 15 - Magnet: 40 Oz Frequency response: 40Hz - 18KHz - Sensitivity: 94dB (@1W/1m) Maximum Sound Pressure Level: 124dB LCD display - MP3 with independents controls