1、BT 5.0 Technology: Mini BT speaker is compatible with all BT enabled devices. Instantly connect to your smartphone or tablet from up to 30 feet away. Automatically reconnects to the last device used. 2、Device Compatible: This mini speaker is compatible with any BT enabled phone, tablet or computer and has a built in microphone for hands free calling, perfect for any music or podcast listener in your life. 3、Small And Portable: You can take the speaker with you everywhere, it's perfect for the outdoors, hiking, beach, dorm, kitchen, bathroom, boat, etc. Available for you to play your favorite music anytime, anywhere. 4、Large Volume: Despite its small size, this wireless speaker has large volume that your phone or music source can be 12m (36 feet) away and it can still output up to more than 90dB, providing clear, premium music playback. 5、USB Charging: This speaker allows you to listen for 2 to 3 hours on a full charge, and the charging cable is as short, compact and convenient as the speaker itself. With a lanyard, you can connect it to your phone to prevent loss.