Portable Bluetooth wireless speaker with FM radio and radio, GTS 1560 TWS GTS-1560 Customized Small Living Room Audio Speakers - New Model Colors for Wireless: BLACK Dimensions: 2 inches by 2 inches, 5 watts per unit. Establish a connection with smart devices Locate the file after turning on and powering on your smartphone. Model Name of the Speaker and Device Pairing When the device is turned on and paired, the blue color will automatically connect. Function of Bluetooth: Yes