Lively graphics, unique design, vivid colors and excellent sound quality are the features that make the UP! Portable speaker stand out. This compact, poket-size device with a built-in Bluetooth module makes it easy to listen to your favorite music anywhere, anytime. Thanks to the small size, the UP! speaker can be taken virtually anywhere and enjoy the sound from many different portable devices such as smartphones, tablets or laptops, so you can play your favorite songs from your own music library. The AUX-in mini jack allows you to connect the speaker to almost any external device. The built-in battery (400 mAh), charged via a micro USB port, ensures very-long operation time on battery power (up to 4 hours).