The Polarenu Bamboo Bluetooth Reg Speaker bamboo Bluetooth speaker is sure to get anyones attention! The speaker body is made from real bamboo and with a 3W output it produces a crystal clear sound with approximately 2. 5 Hours playback time at max volume. The speaker features an FM radio tuner, SD Card input, and a USB input. Built in music controls and a microphone for hands free operation. Bluetooth 5. 1 With a working range of 10 meters (33ft)