Bluetooth wireless speaker: Plays music up to 50-Feet away from your Bluetooth-enabled Smartphone or tablet * Multi-person access: You and a friend can take turns playing music from your Bluetooth devices at the same time * Ultimate Ears Sound Signature: Two full-range drivers and a passive radiator deliver clear, big, perfectly tuned sound * Doubles as a speakerphone: Built-in microphone for hands-free calls in the office, car, house or anywhere * Ultra-portable: Compact design and 10-hour rechargeable battery make it easy to roam with your music