Listen to your favorite songs from your Bluetooth enabled device through the crystal clear V7 Bluetooth wireless speaker. You will enjoy its 33 foot range, and hands-free speakerphone function allowing you to answer phone calls from your Bluetooth enabled mobile phone. Designed with a powerful 2 Watt wireless speaker, a built-in sub-woofer and bass vibration function. The USB rechargeable built-in battery, charges fully in 2-3 hours to provide up to 4 hours of uninterrupted sound while you are on the go.