Create something that's ideal for any promotional effort with the Astro Speaker. This wireless speaker features high definition Bluetooth® 3.0 technology. Pair it with your Bluetooth enabled device from up to 30 feet away and enjoy high-definition sound with a built-in mic for easy hands-free calling no matter where the day takes you. A 300 mAh lithium ion battery provides up to 2 hours of play time. Customize it with your organization's name, logo and advertising message. Approximate size is 2 3/4"H x 2 1/2"D.