Harman Kardon Onyx Studio 9 Speaker-bluetooth Home

Power Output: 50W RMS Connectivity: Bluetooth, V5.3 Transducers: Woofer 1*120mm, Tweeter 3*20mm Battery: Li-ion 17.15 Wh (equivalent to 3.63 V/ 4722 mAh) Charging: USB Charging Port Playtime: 8-hours (dependent on volume level and audio content)