2x8" 40W Rechargeable Speaker LED Lights Bluetooth/FM/USB KK-8207 LED light; large capacity lithium battery, long battery life; outstanding performance surround stereo sound; SD card playback, USB, radio, Bluetooth function, Product size: 270x244x693MM; Playtime: 3-4 hours (at 70% volume) Features Model: KK-8207 Speaker size: 8 inches*2 Power 40W Battery: 3000mAh/3.7V Product size: 270x244x693MM Net weight: 4.41kg Charging: 5 hours Playtime: 3-4 hours (at 70% volume)