NGS Roller Flow is a powerful Bluetooth speaker ideal to take anywhere due to the fact that it is battery-operated and it's equipped with a removable shoulder strap to assist with carrying. Enjoy music outdoors thanks to its maximum portability. This portable speaker is equipped with 2.1 Bluetooth Technology, for wireless transfer with iPad, tablet, or laptop. The device is versatile enough thanks to its USB port with MP3 and offers an SD card slot to play music directly from USB devices, MP3 players and memory cards. In addition, NGS Roller Flow features a FM radio tuner with automatic frequencies search and storage of stations. Through its auxiliary input, devices with audio cable such as smartphones, MP3, etc. can be connected.