,Denver BTL-311. RMS rated power: 5 W. Connectivity technology: Wireless. Product type: Mono portable speaker Product colour: Multicolour. Recommended usage: MP3 player. Battery type: Built-in battery Battery capacity: 1200 mAh,Inter Sales Denver BTL-311 - 5 W - Wireless - Mono portable speaker - Multicolour - MP3 player - Built-in battery