Logitech UE Mobile Boombox Bluetooth Speaker and Speakerphone - Blue Grill/Light Grey 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