Portable speaker features Bluetooth technology so you can stream music wirelessly from any compatible device or make conference calls anywhere. High-quality microphone allows you to take and make calls when it's paired with your smartphone. Lithium iON, 1000 mAh battery is rechargeable for convenient, cost-efficient use. Passive bass radiator provides deep, rich bass tones for a more powerful sound. Easy-to-access controls are located on the top of the unit so you can quickly control your music from the speaker. Plus, its compact size is small enough to take with you.