Rollbar Bluetooth® speaker and smartphone stand. The ifidelity Rollbar Bluetooth® Speaker Stand offers great sound and functionality. The stand function allows for different viewing angles and offers amplified sound while trying to watch a movie on your tablet or smartphone. Listen to uninterrupted playback via Bluetooth for up to 8 hours. Bluetooth working range 10 meters (33 feet). Micro USB to USB cable included for charging the speaker stand. . ABS Plastic and Metal.