Portable Mini Nut Design Wireless Bluetooth Speaker Built-in Microphone with Sling is a great companion on your music journey. High-grade speakers produce crisp, clear sounds with deep booming bass, bringing you a higher level of listening pleasure. It streams audio wirelessly from cellphones via Bluetooth. Built-in microphone allows for convenient hands-free calls. What´s more, it comes with a sling for easy carrying. How do you like this item?